Document:

<PAGE>

                              FIRST AMENDMENT TO
                         SERIES B CONVERTIBLE PREFERRED
                            STOCK PURCHASE AGREEMENT

     This First Amendment to Series B Convertible Preferred Stock Purchase
Agreement (this "First Amendment") is made as of October 14,1999, by and
between Microvision, Inc. (the "Company") and Margaret Elardi (the
"Purchaser"). All capitalized terms not herein defined shall have the
meanings ascribed to them in the Series B Convertible Preferred Stock
Purchase Agreement (the "Agreement") dated as of January 14, 1999, by and
between the Company and the Purchaser.

     WHEREAS, the Company and the Purchaser entered into the Agreement,
pursuant to which the Company, among other things, issued an option to
purchase 1,920 shares of its Series B Convertible Preferred Stock, Class 3
(the "Option") to the Purchaser; and

     WHEREAS, the Company and the Purchaser now desire to amend the terms of
the Option by amending the Agreement, in accordance with Section 6.1 thereof;

     NOW, THEREFORE, the parties hereto hereby agree as follows:

1.   AMENDMENT TO SECTION 2.3. Section 2.3 "Option to Purchase Series
B-3 Stock" shall be replaced in its entirety with the following:

     "2.3 Option to Purchase Common Stock. At any time through June 30, 2000,
          Purchaser shall have the option to purchase up to 100,000 shares of
          Common Stock at a purchase price of nineteen and 20/100ths dollars
          ($19.20) per share, for an aggregate purchase price of one million
          nine hundred twenty thousand dollars ($1,920,000).

2.   WAIVER OF RIGHT TO DIVIDENDS ON SERIES B-2 STOCK. In consideration of
the foregoing amendment to the Option, Purchaser hereby waives any and all
rights and claims in and to dividends payable by reason of her ownership
of any Series B-2 Stock.

3.   NO OTHER AMENDMENTS. The Agreement, as amended by the First Amendment,
shall remain in full force and effect except as herein amended.

     IN WITNESS WHEREOF, the Company and the Purchaser have caused this First
Amendment to be executed effective as of the date first written above.

------------------------------------------------------------------------------
MICROVISION, INC.                                   MARGARET ELARDI

By: /s/ Richard A. Raisig                            Margaret Elardi
   -------------------------                        ---------------
Name: Richard A. Raisig
     -----------------------
Its: Chief Financial Officer
     -----------------------
------------------------------------------------------------------------------<PAGE>

                                                                  Exhibit 4.4(b)

                                 AMENDMENT NO. 1

                            Dated as of June 2, 1997

                                 to that certain

                           REVOLVING CREDIT AGREEMENT

     This AMENDMENT NO. 1 (the "AMENDMENT"), is made as of June 2, 1997, by and
among TELEPHONE AND DATA SYSTEMS, INC. (THE "BORROWER"), an Iowa corporation
having its principal place of business at 30 N. LaSalle Street, Chicago,
Illinois 60602, the financial institutions listed on SCHEDULE 1.1(a) to the
Credit Agreement (as defined below) (the "BANKS"), BANKBOSTON, N.A., f/k/a THE
FIRST NATIONAL BANK OF BOSTON, as agent for the Banks (the "AGENT") and as
Arranger and LASALLE NATIONAL BANK and TORONTO DOMINION (TEXAS), INC., as
Co-Agents.

     WHEREAS, the Borrower, the Banks, the Agent and the Co-Agents are parties
to that certain Revolving Credit Agreement dated as of June 7, 1996 (the "CREDIT
AGREEMENT"), pursuant to which the Banks, upon certain terms and conditions,
have made and agree to make loans to the Borrower; and

     WHEREAS, the Borrower has requested and the Banks have agreed, on the terms
and subject to the conditions set forth herein, to amend the Credit Agreement to
(a) modify the Maturity Date and the provisions regarding the extension of the
Maturity Date therein, and (b) modify SCHEDULE 1.2 thereof;

     NOW, THEREFORE, the parties hereto hereby agree as follows:

     Section 1. DEFINED TERMS. Capitalized terms which are used herein without
definition and which are defined in the Credit Agreement shall have the same
meanings herein as in the Credit Agreement.

     Section 2. AMENDMENT OF CREDIT AGREEMENT.

          (a) SCHEDULE 1.1(a) to the Credit Agreement is hereby amended by
     substituting therefor the SCHEDULE 1.1(a) annexed hereto.

          (b) SCHEDULE 1.2 to the Credit Agreement is hereby amended by
     substituting therefor the SCHEDULE 1.2 annexed hereto.

<PAGE>

          (c) The definition of Maturity Date is hereby amended by deleting the
     date "June 7, 2001" therein and substituting therefor the date "June 7,
     2002".

          (d) Section 2.9 is hereby amended by (a) deleting the phrase "the
     first anniversary of the Closing Date" in the first sentence thereof and
     substituting therefor the date "June 7, 1998" and (b) deleting the date
     "June 7, 2002" in the first sentence thereof and substituting therefor the
     date "June 7, 2003".

     Section 3. EFFECTIVENESS. The effectiveness of this Amendment shall be
subject to the satisfaction of the following conditions.

          (a) DELIVERY. The Borrower and each of the Banks shall have executed
     and delivered to the Agent this Amendment.

          (b) PROCEEDINGS AND DOCUMENTS. All proceedings in connection with the
     transactions contemplated by this Amendment and all documents incident
     thereto shall be reasonably satisfactory in substance and form to the Banks
     and the Agent, and the Agent shall have received all information and such
     counterpart originals or certified or other copies of such documents as the
     Agent may reasonably request.

          (c) NO DEFAULT OR EVENT OF DEFAULT. No Default or Event of Default
     shall exist under the Credit Agreement.

     Section 4. REPRESENTATIONS AND WARRANTIES. The Borrower represents and
warrants to the Banks and the Agent as follows:

          (a) REPRESENTATIONS AND WARRANTIES IN CREDIT AGREEMENT. The
     representations and warranties of the Borrower contained in the Credit
     Agreement, (i) were true and correct in all material respects when made,
     and (ii) except to the extent such representations and warranties by their
     terms are made solely as of a prior date, continue to be true and correct
     in all material respects on the date hereof.

          (b) AUTHORITY, ETC. The execution and delivery by the Borrower of this
     Amendment and the performance by the Borrower of all of its agreements and
     obligations under the Credit Agreement as amended by this Amendment (i) are
     within the corporate proceedings by the Borrower, (ii) have

                                       2
<PAGE>

     been duly authorized by all necessary corporate proceedings by the
     Borrower, (iii) do not conflict with or result in any breach or
     contravention of any provision of law, statute, rule or regulation to which
     the Borrower is subject or any judgment, order, writ, injunction, license
     or permit applicable to the Borrower, and (iv) do not conflict with any
     provision of the corporate charter or by-laws of, or any agreement or other
     instrument binding upon, the Borrower.

          (c) ENFORCEABILITY OF OBLIGATIONS. This Amendment, and the Credit
     Agreement as amended hereby, constitute the legal, valid and binding
     obligations of the Borrower enforceable against the Borrower in accordance
     with their respective terms.

          (d) ABSENCE OF DEFAULTS. Immediately prior to and after giving effect
     to this Amendment, no Default or Event of Default exists under the Credit
     Agreement.

     Section 5. NO WAIVER. Except as otherwise expressly provided for in this
Amendment, nothing in this Amendment shall extend to or affect in any way any of
the Borrower's obligations or any of the rights and remedies of the Banks or the
Agent in respect of the Credit Agreement arising on account of the occurrence of
any Event of Default, all of which are expressly preserved.

     Section 6. MISCELLANEOUS PROVISIONS.

          (a) Except at otherwise expressly provided by this Amendment, all of
     the terms, conditions and provisions of the Credit Agreement shall remain
     the same. It is declared and agreed by each of the parties hereto that the
     Credit Agreement, as amended hereby, shall continue in full force and
     effect, and that this Amendment and the Credit Agreement shall be read and
     construed as one instrument.

          (b) THIS AMENDMENT IS INTENDED TO TAKE EFFECT AS AN AGREEMENT UNDER
     SEAL AND SHALL BE CONSTRUED ACCORDING TO AND GOVERNED BY THE LAWS OF THE
     COMMONWEALTH OF MASSACHUSETTS.

          (c) This Amendment may be executed in any number of counterparts, but
     all such counterparts shall together constitute but one instrument. In
     making proof of this Amendment it shall not be necessary to produce or
     account

                                       3
<PAGE>

     for more than one counterpart signed by each party hereto by and against
     which enforcement hereof is sought.

          (d) The Borrower hereby agrees to pay to the Agent, on demand by the
     Agent, all reasonable out-of-pocket costs and expenses incurred or
     sustained in connection with the preparation of this amendment (including
     reasonable legal fees).

     IN WITNESS WHEREOF, the parties hereto have executed this Amendment as an
agreement under seal of the date first written above.

                                   TELEPHONE AND DATA SYSTEMS, INC.

                                   By:  /s/ RONALD D. WEBSTER
                                        ----------------------------------
                                        Name:  Ronald D. Webster
                                        Title: Vice President and
                                               Treasurer

                                   BANKBOSTON, N.A.,
                                   f/k/a THE FIRST NATIONAL BANK OF
                                   BOSTON, individually and as Agent

                                   By:  /s/ JULIE V. JALELIAN
                                        ----------------------------------
                                        Name:  Julie V. Jalelian
                                        Title: Vice President and
                                               Treasurer

                                   LASALLE NATIONAL BANK,
                                   individually and as Co-Agent

                                   By:  /s/ ANN H. ELLINGSEN
                                        ----------------------------------
                                        Title:  Vice President

                                   TORONTO DOMINION (TEXAS), INC.,
                                   individually and as Co-Agent

                                   By:  /s/ NEVA NESBITT
                                        ----------------------------------
                                        Title:  Vice President

     The signatures of the Banks are omitted.

     Schedule 1.1(a) and 1.2 are not filed herewith. The registrant agrees to
file a copy of Schedule 1.1(a) and 1.2 upon request of the Commission.

                                       4

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00005-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00005-of-00352.parquet"}]]