Document:

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                                                                    EXHIBIT 10.9

                                    AMENDMENT

            This AMENDMENT is made and entered into this 13th day of November
       1998 by and between Technical Consumer Products, Inc. ("TCP"), an Ohio
       corporation located at 23632 Mercantile Rd., Unit A, in Beechwood, Ohio,
       U.S.A. , represented by Ellis Yan, President; and

            PRACTICAL INNOVATIONS, INC. a Delaware corporation represented by
       its President, Andrzej Bobel ("PRACTICAL"), having principal place of
       business at 201 Norman Ct., Des Plaines, Illinois 60016, U.S.A.

            This AMENDMENT is made to the AGREEMENT dated June 18, 1996 and
       signed by the above named parties.

            This AMENDMENT is effective as of January 1, 1999.

            Now, both parties, based on mutual considerations agree to amend the
       AGREEMENT as follows:

       - Delete Paragraph 4.02 in its entirety.

       - Enter New Paragraph 4.02 as follows:

         4.02 Monthly Total Royalty Amount ("MTRA":
          In addition to the Licensing Fee provided for above, TCP shall pay to
       PRACTICAL a nonrefundable Monthly Royalty Payments based on the following
       terms:
          For each and every calendar month, on or before the 15th day of the
       following calendar month during the term of this AGREEMENT and/or as long
       as PRODUCTS are sold by TCP or any other SELLER, the Monthly Royalty
       Payment shall be equal to: Twenty Cents US ($US0.20) multiplied by the
       total number of units of PRODUCTS sold during that particular month.
       However, in no case shall the Monthly Total Royalty Amount (MTRA) be
       higher than:
       a) 4% (four percent) of the first $US500,000 (Five Hundred Thousand
       Dollars US) of NET SALES during the particular calendar month, and

       b) 2% (two percent) of all NET SALES above the first $US500,000 during
       that particular calendar month.

            This AMENDMENT is mutually accepted and agreed to by TCP and
       PRACTICAL, and shall constitute an integral part of the subject
       AGREEMENT.

       Accepted and Agreed to:

       /s/Ellis Yan                     11/13/98
       -----------------------------    ----------------------------
       Ellis Yan                        Date

       /s/Andrzej Bobel                 11/13/98
       -----------------------------    ----------------------------
       Andrzej Bobel                    Date<PAGE>
                                                                   EXHIBIT 10.10

                                    AGREEMENT

          This AGREEMENT is made and entered-into this 1st day of
       March, 2000, by and between

          Technical Consumer Products, Inc. (hereinafter "TCP"), an
       Ohio corporation, having principal office located at 300
       Lena Drive, Aurora, Ohio 44202, U.S.A., represented by Ellis
       Yan, President

        and

          Practical Innovations, Inc. a Delaware corporation having a principal
       place of business at 640 Leland Court, Lake Forest, Illinois 60045, USA,
       and Andrzej Bobel, an individual residing at 640 Leland Court, Lake
       Forest, Illinois 60045, (collectively "PRACTICAL").

          This AGREEMENT incorporates the terms of initial agreement covering
       related subject mater made and entered into on the 18th day of June, 1996
       by and between TCP and PRACTICAL (hereinafter called the "1996
       AGREEMENT").

          WHEREAS, PRACTICAL owns technologies related to Electronic Ballasts
       for Gas Discharge Laps, and PRACTICAL has knowledge and know-how of
       Engineering, Development, Design, Manufacturing, and Market of Electronic
       Ballasts and Gas Discharge Laps; and

          WHEREAS, TCP is desirous of acquiring rights to use PRACTICAL's
       technologies, knowledge and know-how; and

          WHEREAS, TCP and PRACTICAL entered into the "1996 AGREEMENT") under
       which, PRACTICAL granted a license to TCP under certain patents owned by
       PRACTICAL and transferred certain knowledge and know-how to TCP; and

          WHEREAS, said 1996 AGREEMENT was amended in certain respects by
       entering into an amendment on November 13, 1998 (hereinafter called the
       "1998 AMENDMENT";

          NOW, THEREFORE, based on the mutual consideration herein specified,
       the parties hereto agree as follows:

                                       1
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          1. DEFINITIONS

          1.01 "EXCLUSIVE PATENT MATTER" shall mean: the inventions as specified
       in "EXHIBIT A" hereto or any additional exhibit subsequently agreed-on
       and attached to this AGREEMENT any time in the future.
          1.02 "NON-EXCLUSIVE PATENT MATTER" shall mean: the inventions as
       specified in "EXHIBIT B" hereto or any additional exhibit subsequently
       agreed-on and attached to this AGREEMENT any time in the future.

          1.03 "KNOW-HOW" shall mean and include ANY and ALL INFORMATION
       disclosed by PRACTICAL to TCP in one of the following form: oral -
       confined in writing, written, graphic, and/or sample form, or which is
       obtained by TCP from access to a facility of PRACTICAL, and such
       information is related to: EXCLUSIVE PATENT MATTER, NON-EXCLUSIVE PATENT
       MATTER, PRODUCTS, manufacture, use, sale of PRODUCTS, electronic
       lighting, electronic ballast for gas discharge lamps, gas discharge
       lamps, market of lighting, market reassert and studies, competitive
       analysis, and other related information.

          1.04 "PRODUCTS" shall mean and include: (i) any and all types of
       electronic ballasting means and/or systems suitable for powering gas
       discharge lamps, as well as any and all other types of products which
       include said ballasting means and/or systems, based on or derived from
       the EXCLUSIVE PATENT MATTER, NON-EXCLUSIVE PATENT MATTER, or KNOW-HOW, or
       (ii) any and all ballasting means and/or systems suitable for powering
       gas discharge lamps, as well as any and all other types of products which
       include said ballasting means developed, engineered, designed and/or
       provided by PRACTICAL to TCP and not derived from and/or related to the
       EXCLUSIVE PATENT MATTER or NON-EXCLUSIVE PATENT MATTER, or (iii) any and
       all products based on or derived from KNOW-HOW, or (iv) any product
       developed, engineered, designed and/or provided by PRACTICAL to TCP.

          1.05 "SELLER" shall mean (i) TCP to the extent that TCP sells or acts
       as the marketing agent for PRODUCTS, and/or (ii) TCP's marketing
       agent(s), to the extent that TCP uses or permits other persons or
       entities to sell PRODUCTS under any kind of licensing and/or restricted
       marketing arrangement.

                                       2
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            1.06 "NET SALES" shall mean SELLER's gross selling price of
         PRODUCTS, less the following items: (i) trade discounts actually
         deducted, (ii) credits actually deducted for PRODUCTS returned, and
         (iii) taxes, if any, collected and remitted by the SELLER.

            1.07 "TERRITORY" shall mean and include: all countries of
         the world.

           2.0  GRANT
           2.01 Subject to termination and modification rights retained herein,
         PRACTICAL hereby grants to TCP an EXCLUSIVE LICENSE to manufacture,
         use, sell and offer to sell the PRODUCTS under the EXCLUSIVE PATENT
         MATTER within the TERRITORY.

           2.02 Subject to termination and modification rights retained herein,
         PRACTICAL hereby grants to TCP a NON-EXCLUSIVE LICENSE to manufacture,
         use, sell and offer to sell the PRODUCTS under the NON-EXCLUSIVE PATENT
         MATTER within the TERRITORY.

           2.03 TCP may transfer or assign any or all of its rights and
         obligations under this AGREEMENT, provided however that PRACTICAL
         agrees to such transfer with prior written consent and PRACTICAL shall
         receive a reasonable consideration therefor. The nature and amount of
         this consideration must be acceptable to both TCP and PRACTICAL.

            2.04 Any contract manufacturer or supplier selected by TCP to
         manufacture PRODUCTS for TCP shall not be considered a licensed party
         under this AGREEMENT.

           3.0  WARRANTY
           3.01 PRACTICAL warrants that: to the best of its knowledge it owns
         all right, title and interest in or to the EXCLUSIVE PATENT MATTER and
         NON-EXCLUSIVE PATENT MATTER, and it does not know of any right, title
         or interest of any person or entity other than PRACTICAL in or to the
         EXCLUSIVE PATENT MATTER and NON-EXCLUSIVE PATENT MATTER.
            No warranties other than as specifically stated herein are expressed
         or implied relative to the EXCLUSIVE PATENT MATTER or to the
         NON-EXCLUSIVE PATENT MATTER and/or relative to any rights that any
         party may assert in respect to the manufacture, use or sale of
         PRODUCTS.

                                       3
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           4.0 LICENSE FEE AND ROYALTIES
           4.01 License Fee
          In consideration of the Licenses granted hereunder TCP shall issue a
       Shareholder's Certificate equal to five percent (5%) of all TCP stock
       shares in the name of Andrzej Bobel ("License Fee"). Such Shareholder's
       Certificate shall be non-refundable and free of any costs to Andrzej
       Bobel or PRACTICAL.

          4.02 Monthly Royalty Payments
          In addition to the License Fee, TCP shall pay to PRACTICAL a
       non-refundable Monthly Royalty Payments based on the following terms:
          For each and every calendar month, on or before the 15th day of the
       following calendar month during the term of this AGREEMENT and/or as long
       as PRODUCTS are sold by TCP or any other SELLER, the Monthly Royalty
       Payments shall be equal to twenty cents ($0.20) multiplied by the
       aggregate number of PRODUCTS sold during that particular month. However,
       in no case shall the Monthly Royalty Amount be higher than:

       a) Four percent (4%) of the first five hundred thousand dollars
       ($500,000) of the NET SALES of all PRODUCTS, as defined in this
       AGREEMENT; and

       b) Two percent (2%) of all NET SALES above the first five hundred
       thousand dollars ($500,000) and up to one million five hundred thousand
       dollars ($1,500,000) during that particular calendar month; and

       c) One percent (1%) of all NET SALES above the one million five hundred
       thousand dollars ($1,500,000) and up to two million five hundred thousand
       dollars ($2,500,000) during that particular calendar month; and

       d) One half percent (0.5%) of all NET SALES above the two million five
       hundred thousand dollars ($2,500,000) during that particular calendar
       month.

           4.03 Monthly Minimum Royalty Payments
          TCP recognizes that because the rights transferred to it
       under this AGREEMENT are, at least in portion, exclusive in nature, it is
       only reasonable to require monthly NET SALES to meet certain minimum
       levels. Therefore, notwithstanding the amount of monthly NET SALES, for
       every calendar month during the term of this AGREEMENT and/or as long as
       PRODUCTS

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       are sold by any SELLER, TCP shall pay Monthly Minimum Royalty Payments
       equal to twenty thousand dollars ($20,000).

          4.04 TCP shall keep accurate and verifiable records of all operations
       under this AGREEMENT, and shall furnish to PRACTICAL written MONTHLY
       STATEMENTS OF SALES. These statements shall include monthly data as
       follows:
       1. Total quantity of units of PRODUCTS sold during the month, list each
       model separately.
       2. Total of gross sales for the month with listed amounts for each
       PRODUCT model separately
       3. Total of all discount actually deducted, with listed amounts for each
       discount category
       4. Total deductions for sales returns, with listed amounts for each
       PRODUCT model separately
       5. Total of NET SALES for the month
       6. Monthly Royalty Amount based on NET SALES, according to paragraph
       4.02.
       7. Monthly Royalty Amount based on quantities sold, equal to a result of
       multiplication of twenty cents times total quantity, as per "1" above.
       8. Monthly Minimum Royalty due, as per paragraph 4.03.
       9. Amount of royalty due PRACTICAL for the month, equal to largest of the
       amount stated in "6" or "7" or "8".

       These statements are to be provided to PRACTICAL together with Monthly
       Royalty payments.

          4.05 PRACTICAL shall have the right, at its own expense and not more
       often than annually, to have TCP's books examined by a Certified Public
       Accountant ("CPA") for the purpose of verifying the Monthly Royalty
       Payments. In the event that a variance of at least ten percent (10%) is
       found to the detriment of PRACTICAL, then TCP shall pay to PRACTICAL an
       amount equal to three (3) times the variance within 15 days of such
       determination. In addition, TCP shall pay for all costs of the audit. TCP
       will fully cooperate with the CPA with regard to any and all documents
       reasonably requested which are related to, but not limited to, past
       Monthly Royalty Payments delivered to PRACTICAL by TCP.

          4.06 If any payment due hereunder is not timely paid, then the unpaid
       balance will bear interest until paid at annual rate of fifteen percent
       (15%) compounded monthly, until the delinquent balance is paid in full.

                                       5
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          4.07 Payments according to paragraphs 4.02 and 4.03 shall be made for
       as long as either: (i) the PRODUCTS are covered by at least one claim of
       one of PRACTICAL'S pending or issued unexpired US patent, or (ii) the
       EXCLUSIVE PATENT MATTER or NON-EXCLUSIVE PATENT MATTER contains at least
       one pending or issued unexpired US patent, or (iii) the PRODUCTS sold
       have been developed, and/or engineered, and/or designed and provided by
       PRACTICAL to TCP, or (iv) PRODUCTS have been developed by TCP based on,
       or derived from: (a) EXCLUSIVE PATENT MATTER, and/or NON-EXCLUSIVE PATENT
       MATTER, and/or KNOW-HOW, or (b) any product developed, and/or engineered,
       and/or designed, and/or provided by PRACTICAL to TCP under this AGREEMENT
       or 1996 AGREEMENT.

           5.0 OTHER PROVISIONS
           5.01 PRACTICAL will provide to TCP the following information and
       services:

       a) engineering expertise and complete and detailed designs, including
       Schematic Diagrams and Bill of Materials, for the PRODUCTS as described
       in EXHIBIT C hereto;

       b) assistance in the selection of production materials and
       components for the PRODUCTS;

       c) assistance with the selection of supplies and supplier
       relation development and the coordination of all custom
       parts development; and

       d) assistance with the coordination of all necessary
       regulatory approvals.

          5.02 PRACTICAL will not be obligated to provide the services set forth
       in paragraph 5.01 if TCP is not in compliance with any paragraph of this
       AGREEMENT at the time and written notice is given by PRACTICAL and TCP
       has not remedied the default as provided herein.

          5.03 In order for PRACTICAL to provide the required services, TCP will
       pay all expenses of PRACTICAL including: all approved in writing by TCP
       travel expenses, shipping expenses, parts purchasing expenses, third
       party costs of special parts development and design.

          5.04 TCP hereby warrants that it will not acquire any new
       technologies and/or inventions related to: Electronic Lighting,
       Electronic Ballasts or Hybrid (magnetic

                                       6
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       electronic) Ballasts for gas discharge lamps, Gas Discharge Lamps by
       entering into a some form of licensing agreement with any third party
       other than PRACTICAL - without making a formal written request to
       PRACTICAL. If PRACTICAL is not willing or is unable to provide such new
       technology to TCP within sixty (60) days on terms mutually acceptable to
       TCP and PRACTICAL, then TCP shall have the right to acquire the
       technology from any other third party.

          5.05 TCP will not develop AND CLAIM AS ITS OWN, any new products
       and/or technologies and/or inventions (patentable or not) derived from or
       based on, in part or in whole, any information or KNOW-HOW received from
       PRACTICAL under this AGREEMENT or 1996 AGREEMENT.

          5.06 TCP shall mark all PRODUCTS with the appropriate trademark and
       patent markings, including patent pending and actual patent numbers where
       applicable.

          5.07 If either party discovers that the EXCLUSIVE PATENT MATTER is
       infringed upon by a third party, it shall communicate the details to the
       other party. TCP shall thereupon have the right, but not the obligation,
       to take whatever action (in its own name) he deems necessary, including
       filling of lawsuits, to protect the right of parties to this AGREEMENT
       and to terminate such infringement. PRACTICAL shall cooperate with TCP,
       including cooperation and join TCP as necessary party as required in
       certain states, but all of TCP's expense due to actions initiated by TCP
       shall be borne by TCP. Upon resolution of any of such action of TCP, by
       final, non-appealable judicial order or settlement or otherwise, the
       proceeds which may be awarded in the final resolution shall be
       distributed as follows: all third party (outside) legal expenses of TCP
       associated with such action shall be paid first from the amount of award,
       and any amount left above such expenses shall be divided with seventy
       five percent (75%) for TCP and twenty five percent (25%) for PRACTICAL.

          5.08 If either party discovers that the NON-EXCLUSIVE PATENT MATTER is
       infringed upon by a third party, it shall communicate the details to the
       other party. Both parties may jointly, at each party's own expense, and
       discretion, take whatever action is necessary, including filling of
       lawsuits, to protect the right of parties to this AGREEMENT and to
       terminate such infringement. Upon resolution of any of such joint action,
       by final, non-appealable judicial order or

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       settlement or otherwise, the proceeds which may be awarded in the final
       resolution shall be distributed as follows: all third party (outside)
       legal expenses of both parties associated with such action shall be paid
       first from the amount of award, and any amount left above such expenses
       shall be divided equally between TCP and PRACTICAL.

           5.09 In the event that TCP receives notice that PRODUCT infringes the
       patent rights of others, and TCP decided to continue sell PRODUCTS,
       notwithstanding the amount of NET SALES, TCP shall pay, without
       interruptions, any and all amounts due PRACTICAL under this AGREEMENT, as
       follows:
       a) fifty percent (50%) of each Monthly Royalty Payment amount into
       interest-bearing escrow account; and
       b) fifty percent (50%) of each Monthly Royalty Payment amount to
       PRACTICAL.
           In that event, PRACTICAL shall not be paid any royalty if TCP is
       forced and decided, in view of the notice, not to sell PRODUCTS and
       actual NET SALES are equal to zero US Dollars ($US0.0)
           The money placed into escrow account shall not be used to pay any
       expenses of TCP associated with defensive action in such event.

           Upon resolution of any such action by final, non-appealable judicial
       order or settlement, or otherwise, the proceeds from the escrow account
       shall be distributed as directed or agreed in any such final resolution.

           5.10 Except as specified in paragraph 3, nothing herein shall be
       construed as a warranty or representation by PRACTICAL as to the scope or
       validity of the EXCLUSIVE PATENT MATTER or NON-EXCLUSIVE PATENT MATTER or
       any patent(s) issuing thereon. TCP, as the manufacturer of PRODUCTS, will
       be solely responsible for defending any claims against it for design
       defects or patent infringement claims arising from the manufacture, sale
       or use of all models of PRODUCTS. TCP will also defend and hold PRACTICAL
       and Bobel harmless against any such claim for damages and TCP will not
       sue PRACTICAL or Bobel as a result of any such claim.

          5.11 TCP and PRACTICAL hereby agree to effectively cooperate, to the
       best of their abilities, in the process of design, verification,
       qualification for manufacturing and sale or use of all models of
       PRODUCTS.

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          5.12 TCP will indemnify, defend and hold PRACTICAL and Bobel harmless
       from any and all losses, judgments, settlements, claims, or damages,
       including attorney fees, costs and expenses incurred as a result of any
       claim arising out of or in connection with TCP's manufacture, use,
       promotion, marketing, distribution, offer for sale, or sale of PRODUCTS,
       including, but not limited to, claims arising out of the alleged
       negligence in TCP's manufacture, use, promotion, marketing, distribution,
       offer for sale, or sale of the PRODUCTS or claims based upon product
       liability, provided that TCP is promptly notified in writing of such
       claims against PRACTICAL and provided further that PRACTICAL permits TCP
       to defend, compromise, or settle such claim and gives TCP all available
       information, reasonable assistance, and authority to enable TCP to do so.

          5.13 Neither TCP nor PRACTICAL shall challenge or contest the validity
       of this AGREEMENT. TCP agrees and warrants that TCP or any SELLER will
       not challenge or contest validity of any patent application or issued
       patents owned by or assigned to PRACTICAL or Andrzej Bobel.

          5.14 TCP shall use its best effort to maintain in confidence all
       proprietary matters associated with the EXCLUSIVE PATENT MATTER, and/or
       NON-EXCLUSIVE PATENT MATTER, and/or KNOW-HOW, and/or PRODUCTS, as well as
       any other Proprietary or Confidential Information or Trade Secrets
       ("PROPRIETARY MATTER") provided by PRACTICAL in connection with this
       AGREEMENT.

          To the extent reasonable necessary, PROPRIETARY MATTER may be
       disclosed to those employees or agents of TCP who are reasonably required
       to have access to the PROPRIETARY MATTER in order to accomplish TCP's
       manufacturing, sale, and/or marketing of PRODUCTS. However, any
       disclosure under circumstances whereby such employee signs a
       confidentiality agreement and understands its obligation to maintain in
       confidence all PROPRIETARY MATTERS received from TCP or PRACTICAL.

          5.15 If any dispute arises under this AGREEMENT, the parties shall
       negotiate in good faith to settle such dispute. If the parties cannot
       resolve such dispute themselves, then they shall submit the dispute to
       arbitration by any mutually-acceptable arbitrator. If no arbitrator is
       mutually acceptable, than the parties shall submit the matter to
       arbitration under the rules of the

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       American Arbitration Association ("AAA") . Under any arbitration, both
       parties shall cooperate and agree to abide finally by any decision of the
       arbitration proceedings. If AAA is selected, the arbitration shall take
       place under the auspices of the nearest branch of the AAA most convenient
       to both parties. The cost of the arbitration shall be born according to
       the decision of the arbitrator, who may apportion costs equally, or in
       accordance with any finding of fault or lack of good faith of either
       party. The arbitrator's award shall be non-appealable and enforceable in
       any court of competent jurisdiction.

          5.16 PRACTICAL hereby directs TCP to make all payments due PRACTICAL
       under this AGREEMENT payable to "Practical Innovations" by a check or
       wire transfer to a designated bank account at any US Bank.

          5.17 In the event that either party hereto shall be required, or
       shall deem it necessary or advisable, to give notice to the other party,
       such notice shall be served upon the other party by depositing said
       notice in the United States mail, postage paid certified mail with return
       receipt requested, and addressed to:

                         Ellis Yan, President
                         Technical Consumer Products, Inc.
                         300 Lena Drive
                         Aurora, Ohio 44222

                                or
                         Andrzej Bobel, President
                         Practical Innovations, Inc.
                         640 Leland Court
                         Lake Forest, Illinois 60045

       as appropriate. Any notice so given shall be deemed received on the third
       business day following its deposit in the US Mail. Either party hereto
       may change the address at which such party shall receive notices
       hereunder by giving notice of such change of address to the other party
       hereto in accordance with the provisions of this paragraph.

           5.18 If either party shall be in default in any terms of this
       AGREEMENT, the other party may give written notice of its intention to
       terminate this AGREEMENT, specifying such default. Unless the default is
       not remedied within thirty (30) days after the receipt of such written
       notice, this

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         AGREEMENT shall terminate as of the expiration of such thirty day
         period.

             5.19 In the event that: (i) the License granted hereunder is
         terminated as per paragraph 5.18 and SELLER continues to sell PRODUCTS,
         then TCP shall nevertheless remain obligated to make Monthly Royalty
         Payments due PRACTICAL under this AGREEMENT.

             5.20 If TCP shall go into receivership, bankruptcy, or insolvency,
         or make an assignment, this AGREEMENT may be immediately terminated by
         PRACTICAL by written notice, but without prejudice in regards to any
         rights of PRACTICAL hereunder.

             5.21 TCP may cancel all its rights and obligations under this
         AGREEMENT at any time provided if it so cancels: (i) TCP shall keep in
         confidence any and all proprietary information received from PRACTICAL
         under or in connection with this AGREEMENT; (ii) TCP shall pay to
         PRACTICAL all payments due under this AGREEMENT up to the time of
         cancellation; and (iii) TCP shall refrain from manufacturing, use, sale
         and/or marketing PRODUCTS, as well as from using the EXCLUSIVE PATENT
         MATTER and/or NON-EXCLUSIVE PATENT MATTER, and/or KNOW-HOW in any way,
         except sale of current inventories for which royalties shall be paid as
         provided hereunder.

             5.22 This AGREEMENT shall be binding upon and shall inure to the
         benefit of the parties hereto and their respective successors and
         assigns including any and all worldwide subsidiaries, affiliates,
         suppliers, customers, and legal representatives.

             5.23 This AGREEMENT may not be alerted or amended except in
         writing, signed by the parties hereto or their respective successors
         and assigns.

             5.24 This AGREEMENT shall be governed by and construed in
         accordance with the laws of state of Illinois.

             5.25 TCP represents and warrants that the execution and delivery by
         it of this AGREEMENT has been authorized by appropriate action of its
         Board of Directors in accordance with provisions of law and its
         by-laws.

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             IN WITNESS WHEREOF the parties hereto have duly executed this
         AGREEMENT on the day and year first above written.

       Technical Consumer Products, Inc. (TCP)

       By:  /s/Ellis Yan                       March 1st, 2000
          ---------------------------------    ---------------------
             Ellis Yan, President              Date

       Practical Innovations, Inc.

       By:  /s/Andrzej Bobel                   March 1st, 2000
          ---------------------------------    ---------------------
             Andrzej Bobel, President          Date

                                       12
<PAGE>

                                     EXHIBIT A
                                     ---------

                             EXCLUSIVE PATENT MATTER

         U.S. Patent No.      Issue Date     Title

         5,448,137            Sept.5, 1995   ELECTRONIC ENERGY
                                             CONVERTER HAVING TWO
                                             RESONANT CIRCUITS

         5,502,635             Mar.26,1996   PARALLEL RESONANT
                                             INTEGRATED INVERTER
                                             BALLAST FOR GAS
                                             DISCHARGE LAMPS

         5,801,492            Sep.1, 1998    ELECTRONIC BALLAST FOR
                                             GAS DISCHARGE LAMP
                                             HAVING PRIMARY AND
                                             AUXILIARY RESONANT
                                             CIRCUIT

                                       13
<PAGE>

                                     EXHIBIT B

                            NON-EXCLUSIVE PATENT MATTER

         U.S. Patent No.      Issue Date     Title

         5,434,480           July 18,1995    ELECTRONIC DEVICE FOR
                                             POWERING A GAS
                                             DISCHARGE LOAD FROM
                                             A LOW FREQUENCY SOURCE

         5,436,529           July 25, 1995   CONTROL AND PROTECTION
                                             CIRCUIT FOR ELECTRONIC
                                             BALLAST

         5,371,438           Dec. 6, 1994    ENERGY CONVERSION DEVICE
                                             HAVING AN ELECTRONIC
                                             CONVERTER WITH DC INPUT
                                             TERMINAL FOR DELIVERING
                                             A HIGH FREQUENCY SOURCE

         5,982,106           Nov.9,1999       SELF-PROTECTED SERIES
                                             RESONANT ELECTRONIC
                                             ENERGY CONVERTER

                                       14

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