BY-LAWS

                                       OF

                               PTN WIRELESS, INC.

                                    ARTICLE I
                                  Stockholders
                                  ------------



          Section 1.1. Annual Meetings. An annual meeting of stockholders shall
be held for the election of Directors at such date, time and place either within
or without the State of Delaware as may be designated by the Board of Directors
from time to time. Any other proper business may be transacted at the annual
meeting.

          Section 1.2. Special Meetings. Special meetings of stockholders may be
called at any time by the Chairman of the Board, if any, the Vice Chairman of
the Board, if any, or the President to be held at such date, time and place
either within or without the State of Delaware as may be stated in the notice of
the meeting. A special meeting of stockholders shall be called by the Secretary
upon the written request, stating the purpose of the meeting, of stockholders
who together own of record a majority of the outstanding shares of each class of
stock entitled to vote at such meeting.

          Section 1.3. Notice of Meetings. Whenever stockholders are required or
permitted to take any action at a meeting, a written notice of the meeting shall
be given which shall state the place, date and hour of the meeting, and, in the
case of a special meeting, the purpose or purposes for which the meeting is
called. Unless otherwise provided by law, the written notice of any meeting
shall be given not less than ten nor more than sixty days before the date of the
meeting to each stockholder entitled to vote at such meeting. If mailed, such
notice shall be deemed to be given when deposited in the United States mail,
postage prepaid, directed to the stockholder at such stockholder's address as it
appears on the records of the Corporation.

          Section 1.4. Adjournments. Any meeting of stockholders, annual or
special, may adjourn from time to time to reconvene at the same or some other
place, and notice need not be given of any such adjourned meeting if the time
and place thereof are announced at the meeting at which the adjournment is
taken. At the adjourned meeting the Corporation may transact any business which
might have been transacted at the original meeting. If the adjournment is for
more than thirty days, or if after the adjournment a new record date is fixed
for the adjourned meeting, a notice of the adjourned meeting shall be given to
each stockholder of record entitled to vote at the meeting.

          Section 1.5. Quorum. At each meeting of stockholders, except where
otherwise provided by law or the certificate of incorporation or these by-laws,
the holders of a majority of the outstanding shares of each class of stock
entitled to vote at the meeting, present in person or represented by proxy,
shall constitute a quorum. For purposes of the foregoing, two or more classes or

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series of stock shall be considered a single class if the holders thereof are
entitled to vote together as a single class at the meeting. In the absence of a
quorum the stockholders so present may, by majority vote, adjourn the meeting
from time to time in the manner provided by Section 1.4 of these by-laws until a
quorum shall attend. Shares of its own capital stock belonging on the record
date for the meeting to the Corporation or to another corporation, if a majority
of the shares entitled to vote in the election of directors of such other
corporation is held, directly or indirectly, by the Corporation, shall neither
be entitled to vote nor be counted for quorum purposes; provided, however, that
the foregoing shall not limit the right of the Corporation to vote stock,
including but not limited to its own stock, held by it in a fiduciary capacity.

          Section 1.6. Organization. Meetings of stockholders shall be presided
over by the Chairman of the Board, if any, or in the absence of the Chairman of
the Board by the Vice Chairman of the Board, if any, or in the absence of the
Vice Chairman of the Board by the President, or in the absence of the President
by a Vice President, or in the absence of the foregoing persons by a chairman
designated by the Board of Directors, or in the absence of such designation by a
chairman chosen at the meeting. The Secretary, or in the absence of the
Secretary an Assistant Secretary, shall act as secretary of the meeting, but in
the absence of the Secretary and any Assistant Secretary the chairman of the
meeting may appoint any person to act as secretary of the meeting.

          Section 1.7. Voting; Proxies. Unless otherwise provided in the
certificate of incorporation, each stockholder entitled to vote at any meeting
of stockholders shall be entitled to one vote for each share of stock held by
such stockholder which has voting power upon the matter in question. If the
certificate of incorporation provides for more or less than one vote for any
share on any matter, every reference in these by-laws to a majority or other
proportion of stock shall refer to such majority or other proportion of the
votes of such stock. Each stockholder entitled to vote at a meeting of
stockholders or to express consent or dissent to corporate action in writing
without a meeting may authorize another person or persons to act for such
stockholder by proxy, but no such proxy shall be voted or acted upon after three
years from its date, unless the proxy provides for a longer period. A duly
executed proxy shall be irrevocable if it states that it is irrevocable and if,
and only as long as, it is coupled with an interest sufficient in law to support
an irrevocable power. A stockholder may revoke any proxy which is not
irrevocable by attending the meeting and voting in person or by filing an
instrument in writing revoking the proxy or another duly executed proxy bearing
a later date with the Secretary of the Corporation. Voting at meetings of
stockholders need not be by written ballot and need not be conducted by
inspectors unless the holders of a majority of the outstanding shares of all
classes of stock entitled to vote thereon present in person or by proxy at such
meeting shall so determine. At all meetings of stockholders for the election of
directors a plurality of the votes cast shall be sufficient to elect. With
respect to other matters, unless otherwise provided by law or by the certificate
of incorporation or these by-laws, the affirmative vote of the holders of a
majority of the shares of all classes of stock present in person or represented
by proxy at the meeting and entitled to vote on the subject matter shall be the
act of the stockholders, provided that (except as otherwise required by law or
by the certificate of incorporation) the Board of Directors may require a larger
vote upon any such matter. Where a separate vote by class is required, the
affirmative vote of the holders of a majority of the shares of each class
present in person or represented by proxy at the meeting shall be the act of
such class, except as otherwise provided by law or by the certificate of
incorporation or these by-laws.

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          Section 1.8. Fixing Date for Determination of Stockholders of Record.
In order that the Corporation may determine the stockholders entitled to notice
of or to vote at any meeting of stockholders or any adjournment thereof, or to
express consent to corporate action in writing without a meeting, or entitled to
receive payment of any dividend or other distribution or allotment of any
rights, or entitled to exercise any rights in respect of any change, conversion
or exchange of stock or for the purpose of any other lawful action, the Board of
Directors may fix, in advance, a record date, which shall not be more than sixty
nor less than ten days before the date of such meeting, nor more than sixty days
prior to any other action. If no record date is fixed: (1) the record date for
determining stockholders entitled to notice of or to vote at a meeting of
stockholders shall be at the close of business on the day next preceding the day
on which notice is given, or, if notice is waived, at the close of business on
the day next preceding the day on which the meeting is held; (2) the record date
for determining stockholders entitled to express consent to corporate action in
writing without a meeting, when no prior action by the Board is necessary, shall
be the day on which the first written consent is expressed; and (3) the record
date for determining stockholders for any other purpose shall be at the close of
business on the day on which the Board adopts the resolution relating thereto. A
determination of stockholders of record entitled to notice of or to vote at a
meeting of stockholders shall apply to any adjournment of the meeting; provided,
however, that the Board may fix a new record date for the adjourned meeting.

          Section 1.9. List of Stockholders Entitled to Vote. The Secretary
shall prepare and make, at least ten days before every meeting of stockholders,
a complete list of the stockholders entitled to vote at the meeting, arranged in
alphabetical order, and showing the address of each stockholder and the number
of shares registered in the name of each stockholder. Such list shall be open to
the examination of any stockholder, for any purpose germane to the meeting,
during ordinary business hours, for a period of at least ten days prior to the
meeting, either at a place within the city where the meeting is to be held,
which place shall be specified in the notice of the meeting, or, if not so
specified, at the place where the meeting is to be held. The list shall also be
produced and kept at the time and place of the meeting during the whole time
thereof and may be inspected by any stockholder who is present.

          Section 1.10. Consent of Stockholders in Lieu of Meeting. Any action
required by law to be taken at any annual or special meeting of stockholders of
the Corporation, or any action which may be taken at any annual or special
meeting of such stockholders, may be taken without a meeting, without prior
notice and without a vote, if a consent in writing, setting forth the action so
taken, shall be signed by the holders of outstanding stock having not less than
the minimum number of votes that would be necessary to authorize or take such
action at a meeting at which all shares entitled to vote thereon were present
and voted. Prompt notice of the taking of the corporate action without a meeting
by less than unanimous written consent shall be given to those stockholders who
have not consented in writing.

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                                   ARTICLE II
                               Board of Directors
                               ------------------


          Section 2.1. Powers; Number; Qualifications. The business and affairs
of the Corporation shall be managed by or under the direction of the Board of
Directors, except as may be otherwise provided by law or in the certificate of
incorporation. The Board shall consist of one or more members, the number
thereof to be determined from time to time by the Board. Directors need not be
stockholders.

          Section 2.2. Election; Term of Office; Resignation; Removal;
Vacancies. Each director shall hold office until the annual meeting of
stockholders next succeeding his or her election and until his or her successor
is elected and qualified or until his or her earlier resignation or removal. Any
director may resign at any time upon written notice to the Board of Directors or
to the President or the Secretary of the Corporation. Such resignation shall
take effect at the time specified therein, and unless otherwise specified
therein no acceptance of such resignation shall be necessary to make it
effective. Any director or the entire Board of Directors may be removed, with or
without cause, by the holders of a majority of the shares then entitled to vote
at an election of directors; except that, if the certificate of incorporation
provides for cumulative voting and less than the entire Board is to be removed,
no director may be removed without cause if the votes cast against his or her
removal would be sufficient to elect him or her if then cumulatively voted at an
election of the entire Board, or, if there be classes of directors, at an
election of the class of directors of which he or she is a part. Whenever the
holders of any class or series of stock are entitled to elect one or more
directors by the provisions of the certificate of incorporation, the provisions
of the preceding sentence shall apply, in respect to the removal without cause
of a director or directors so elected, to the vote of the holders of the
outstanding shares of that class or series and not to the vote of the
outstanding shares as a whole. Unless otherwise provided in the certificate of
incorporation or these by-laws, vacancies and newly created directorships
resulting from any increase in the authorized number of directors elected by all
of the stockholders having the right to vote as a single class or from any other
cause may be filled by a majority of the directors then in office, although less
than a quorum, or by the sole remaining director. Whenever the holders of any
class or classes of stock or series thereof are entitled to elect one or more
directors by the provisions of the certificate of incorporation, vacancies and
newly created directorships of such class or classes or series may be filled by
a majority of the directors elected by such class or classes or series thereof
then in office, or by the sole remaining director so elected.

          Section 2.3. Regular Meetings. Regular meetings of the Board of
Directors may be held at such places within or without the State of Delaware and
at such times as the Board may from time to time determine, and if so determined
notice thereof need not be given.

          Section 2.4. Special Meetings. Special meetings of the Board of
Directors may be held at any time or place within or without the State of

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Delaware whenever called by the Chairman cf the Board, if any, by the Vice
Chairman of the Board, if any, by the President or by any two directors.
Reasonable notice thereof shall be given by the person or persons calling the
meeting.

          Section 2.5. Participation in Meetings by Conference Telephone
Permitted. Unless otherwise restricted by the certificate of incorporation or
these by-laws, members of the Board of Directors, or any committee designated by
the Board, may participate in a meeting of the Board or of such committee, as
the case may be, by means of conference telephone or similar communications
equipment by means of which all persons participating in the meeting can hear
each other, and participation in a meeting pursuant to this by-law shall
constitute presence in person at such meeting.

          Section 2.6. Quorum; Vote Required for Action. At all meetings of the
Board of Directors one-third of the entire Board shall constitute a quorum for
the transaction of business. The vote of a majority of the directors present at
a meeting at which a quorum is present shall be the act of the Board unless the
certificate of incorporation or these by-laws shall require a vote of a greater
number. In case at any meeting of the Board a quorum shall not be present, the
members of the Board present may adjourn the meeting from time to time until a
quorum shall attend.

          Section 2.7. Organization. Meetings of the Board of Directors shall be
presided over by the Chairman of the Board, if any, or in the absence of the
Chairman of the Board by the Vice Chairman of the Board, if any, or in the
absence of the Vice Chairman of the Board by the President, or in their absence
by a chairman chosen at the meeting. The Secretary, or in the absence of the
Secretary an Assistant Secretary, shall act as secretary of the meeting, but in
the absence of the Secretary and any Assistant Secretary the chairman of the
meeting may appoint any person to act as secretary of the meeting.

          Section 2.8. Action by Directors Without a Meeting. Any action
required or permitted to be taken at any meeting of the Board of Directors, or
of any committee thereof, may be taken without a meeting if all members of the
Board or of such committee, as the case may be, consent thereto in writing, and
the writing or writings are filed with the minutes of proceedings of the Board
or conunittee.

          Section 2.9. Compensation of Directors. The Board of Directors shall
have the authority to fix the compensation of directors.


                                   ARTICLE III
                                   Committees
                                   ----------


          Section 3.1. Committees. The Board of Directors may, by resolution
passed by a majority of the whole Board, designate one or more committees, each
committee to consist of one or more of the directors of the Corporation. The

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Board may designate one or more directors as alternate members of any committee,
who may replace any absent or disqualified member at any meeting of the
committee. In the absence or disqualification of a member of a committee, the
member or members thereof present at any meeting and not disqualified from
voting, whether or not such member or members constitute a quorum, may
unanimously appoint another member of the Board to act at the meeting in place
of any such absent or disqualified member. Any such committee, to the extent
provided in the resolution of the Board, shall have and may exercise all the
powers and authority of the Board in the management of the business and affairs
of the Corporation, and may authorize the seal of the Corporation to be affixed
to all papers which may require it; but no such committee shall have power or
authority in reference to amending the certificate of incorporation, adopting an
agreement of merger or consolidation, recommending to the stockholders the sale,
lease or exchange of all or substantially all of the Corporation's property and
assets, recommending to the stockholders a dissolution of the Corporation or a
revocation of dissolution, removing or indemnifying directors or amending these
by-laws; and, unless the resolution expressly so provides, no such committee
shall have the power or authority to declare a dividend or to authorize the
issuance of stock.

          Section 3.2. Committee Rules. Unless the Board of Directors otherwise
provides, each committee designated by the Board may adopt, amend and repeal
rules for the conduct of its business. In the absence of a provision by the
Board or a provision in the rules of such committee to the contrary, a majority
of the entire authorized number of members of such committee shall constitute a
quorum for the transaction of business, the vote of a majority of the members
present at a meeting at the time of such vote if a quorum is then present shall
be the act of such committee, and in other respects each committee shall conduct
its business in the same manner as the Board conducts its business pursuant to
Article II of these by-laws.


                                   ARTICLE IV
                                    Officers
                                    --------


          Section 4.1. Officers; Election. As soon as practicable after the
annual meeting of stockholders in each year, the Board of Directors shall elect
a President and a Secretary, and it may, if it so determines, elect from among
its members a Chairman of the Board and a Vice Chairman of the Board. The Board
may also elect one or more Vice Presidents, one or more Assistant Vice
Presidents, one or more Assistant Secretaries, a Treasurer and one or more
Assistant Treasurers and such other officers as the Board may deem desirable or
appropriate and may give any of them such further designations or alternate
titles as it considers desirable. Any number of offices may be held by the same
person.

          Section 4.2. Term of office; Resignation; Removal; Vacancies. Except
as otherwise provided in the resolution of the Board of Directors electing any
officer, each officer shall hold office until the first meeting of the Board
after the annual meeting of stockholders next succeeding his or her election,

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and until his or her successor is elected and qualified or until his or her
earlier resignation or removal. Any officer may resign at any time upon written
notice to the Board or to the President or the Secretary of the Corporation.
Such resignation shall take effect at the time specified therein, and unless
otherwise specified therein no acceptance of such resignation shall be necessary
to make it effective. The Board may remove any officer with or without cause at
any time. Any such removal shall be without prejudice to the contractual rights
of such officer, if any, with the Corporation, but the election of an officer
shall not of itself create contractual rights. Any vacancy occurring in any
office of the Corporation by death, resignation, removal or otherwise may be
filled for the unexpired portion of the term by the Board at any regular or
special meeting.

          Section 4.3. Chairman of the Board. The Chairman of the Board, if any,
shall preside at all meetings of the Board of Directors and of the stockholders
at which he or she shall be present and shall have and may exercise such powers
as may, from time to time, be assigned to him or her by the Board and as may be
provided by law.

          Section 4.4. Vice Chairman of the Board. In the absence of the
Chairman of the Board, the Vice Chairman of the Board, if any, shall preside at
all meetings of the Board of Directors and of the stockholders at which he or
she shall be present and shall have and may exercise such powers as may, from
time to time, be assigned to him or her by the Board and as may be provided by
law.

          Section 4.5. President. In the absence of the Chairman of the Board
and Vice Chairman of the Board, the President shall preside at all meetings of
the Board of Directors and of the stockholders at which he or she shall be
present. The President shall be the chief executive officer and shall have
general charge and supervision of the business of the Corporation and, in
general, shall perform all duties incident to the office of president of a
corporation and such other duties as may, from time to time, be assigned to him
or her by the Board or as may be provided by law.

          Section 4.6. Vice Presidents. The Vice President or Vice Presidents,
at the request or in the absence of the President or during the President's
inability to act, shall perform the duties of the President, and when so acting
shall have the powers of the President. If there be more than one Vice
President, the Board of Directors may determine which one or more of the Vice
Presidents shall perform any of such duties; or if such determination is not
made by the Board, the President may make such determination; otherwise any of
the Vice Presidents may perform any of such duties. The Vice President or Vice
Presidents shall have such other powers and shall perform such other duties as
may, from time to time, be assigned to him or her or them by the Board or the
President or as may be provided by law.

          Section 4.7. Secretary. The Secretary shall have the duty to record
the proceedings of the meetings of the stockholders, the Board of Directors and
any committees in a book to be kept for that purpose, shall see that all notices
are duly given in accordance with the provisions of these by-laws or as required
by law, shall be custodian of the records of the Corporation, may affix the

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corporate seal to any document the execution of which, on behalf of the
Corporation, is duly authorized, and when so affixed may attest the same, and,
in general, shall perform all duties incident to the office of secretary of a
corporation and such other duties as may, from time to time, be assigned to him
or her by the Board or the President or as may be provided by law.

          Section 4.8. Treasurer. The Treasurer shall have charge of and be
responsible for all funds, securities, receipts and disbursements of the
Corporation and shall deposit or cause to be deposited, in the name of the
Corporation, all moneys or other valuable effects in such banks, trust companies
or other depositories as shall, from time to time, be selected by or under
authority of the Board of Directors. If required by the Board, the Treasurer
shall give a bond for the faithful discharge of his or her duties, with such
surety or sureties as the Board may determine. The Treasurer shall keep or cause
to be kept full and accurate records of all receipts and disbursements in books
of the Corporation, shall render to the President and to the Board, whenever
requested, an account of the financial condition of the Corporation, and, in
general, shall perform all the duties incident to the office of treasurer of a
corporation and such other duties as may, from time to time, be assigned to him
or her by the Board or the President or as may be provided by law.

          Section 4.9. Other Officers. The other officers, if any, of the
Corporation shall have such powers and duties in the management of the
Corporation as shall be stated in a resolution of the Board of Directors which
is not inconsistent with these by-laws and, to the extent not so stated, as
generally pertain to their respective offices, subject to the control of the
Board. The Board may require any officer, agent or employee to give security for
the faithful performance of his or her duties.


                                    ARTICLE V
                                      Stock
                                      -----


          Section 5.1. Certificates. Every holder of stock in the Corporation
shall be entitled to have a certificate signed by or in the name of the
Corporation by the Chairman or Vice Chairman of the Board of Directors, if any,
or the President or a Vice President, and by the Treasurer or an Assistant
Treasurer, or the Secretary or an Assistant Secretary, of the Corporation,
certifying the number of shares owned by such holder in the Corporation. If such
certificate is manually signed by one officer or manually countersigned by a
transfer agent or by a registrar, any other signature on the certificate may be
a facsimile. In case any officer, transfer agent or registrar who has signed or
whose facsimile signature has been placed upon a certificate shall have ceased
to be such officer, transfer agent or registrar before such certificate is
issued, it may be issued by the Corporation with the same effect as if such
person were such officer, transfer agent or registrar at the date of issue.

          Section 5.2. Lost, Stolen or Destroyed Stock Certificates; Issuance of
New Certificates. The Corporation may issue a new certificate of stock in the
place of any certificate theretofore issued by it, alleged to have been lost,
stolen or destroyed, and the Corporation may require the owner of the lost,

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stolen or destroyed certificate, or such owner's legal representative, to give
the Corporation a bond sufficient to indemnify it against any claim that may be
made against it on account of the alleged loss, theft or destruction of any such
certificate or the issuance of such new certificate.



                                   ARTICLE VI
                                  Miscellaneous
                                  -------------


          Section 6.1. Fiscal Year. The fiscal year of the Corporation shall be
determined by the Board of Directors.

          Section 6.2. Seal. The Corporation may have a corporate seal which
shall have the name of the Corporation inscribed thereon and shall be in such
form as may be approved from time to time by the Board of Directors. The
corporate seal may be used by causing it or a facsimile thereof to be impressed
or affixed or in any other manner reproduced.

          Section 6.3. Waiver of Notice of Meetings of Stockholders, Directors
and Committees. Whenever notice is required to be given by law or under any
provision of the certificate of incorporation or these by-laws, a written waiver
thereof, signed by the person entitled to notice, whether before or after the
time stated therein, shall be deemed equivalent to notice. Attendance of a
person at a meeting shall constitute a waiver of notice of such meeting, except
when the person attends a meeting for the express purpose of objecting, at the
beginning of the meeting, to the transaction of any business because the meeting
is not lawfully called or convened. Neither the business to be transacted at,
nor the purpose of, any regular or special meeting of the stockholders,
directors, or members of a committee of directors need be specified in any
written waiver of notice unless so required by the certificate of incorporation
or these by-laws.

          Section 6.4. Indemnification of Directors, Officers and Employees. The
Corporation shall indemnify to the full extent authorited by law any person made
or threatened to be made a party to any action, suit or proceeding, whether
criminal, civil, administrative or investigative, by reason of the fact that
such person or such person's testator or intestate is or was a director, officer
or employee of the Corporation or serves or served at the request of the
Corporation any other enterprise as a director, officer or employee. For
purposes of this by-law, the term "Corporation" shall include any predecessor of
the Corporation and any constituent corporation (including any constituent of a
constituent) absorbed by the Corporation in a consolidation or merger; the term
"other enterprise" shall include any corporation, partnership, joint venture,
trust or employee benefit plan; service "at the request of the Corporation"
shall include service as a director, officer or employee of the Corporation
which imposes duties on, or involves services by, such director, officer or
employee with respect to an employee benefit plan, its participants or
beneficiaries; any excise taxes assessed on a person with respect to an employee

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benefit plan shall be deemed to be indemnifiable expenses; and action by a
person with respect to an employee benefit plan which such person reasonably
believes to be in the interest of the participants and beneficiaries of such
plan shall be deemed to be action not opposed to the best interests of the
Corporation.

          Section 6.5. Interested Directors; Quorum. No contract or transaction
between the Corporation and one or more of its directors or officers, or between
the Corporation and any other corporation, partnership, association or other
organization in which one or more of its directors or officers are directors or
officers, or have a financial interest, shall be void or voidable solely for
this reason, or solely because the director or officer is present at or
participates in the meeting of the Board of Directors or committee thereof which
authorizes the contract or transaction, or solely because his or her or their
votes are counted for such purpose, if: (1) the material facts as to his or her
relationship or interest and as to the contract or transaction are disclosed or
are known to the Board or the committee, and the Board or committee in good
faith authorizes the contract or transaction by the affirmative votes of a
majority of the disinterested directors, even though the disinterested directors
be less than a quorum; or (2) the material facts as to his or her relationship
or interest and as to the contract or transaction are disclosed or are known to
the stockholders entitied to vote thereon, and the contract or transaction is
specifically approved in good faith by vote of the stockholders; or (3) the
contract or transaction is fair as to the Corporation as of the time it is
authorized, approved or ratified, by the Board, a committee thereof or the
stockholders. Common or interested directors may be counted in determining the
presence of a quorum at a meeting of the Board or of a committee which
authorizes the contract or transaction.

          Section 6.6. Form of Records. Any records maintained by the
Corporation in the regular course of its business, including its stock ledger,
books of account and minute books, may be kept on, or be in the form of, punch
cards, magnetic tape, photographs, microphotographs or any other information
storage device, provided that the records so kept can be converted into clearly
legible form within a reasonable time. The Corporation shall so convert any
records so kept upon the request of any person entitled to inspect the same.

          Section 6.7. Amendment of By-Laws. These by-laws may be amended or
repealed, and new by-laws adopted, by the Board of Directors, but the
stockholders entitled to vote may adopt additional by-laws and may amend or
repeal any by-law whether or not adopted by them.

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