Document:

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                                                                   Exhibit 10.09

February 19, 2001

Mr. C. Tom O'Grady
30 Southgate Drive
The Woodlands, TX  77380

Dear Tom:

I am very pleased to offer you the position of Vice President, Mergers and
Acquisitions, at Roper Industries, Inc. Roper's entire management team was
impressed with your experience and, more importantly, with your personality and
management style. I know you will fit in well at our company and I am sure you
will enjoy working with us.

This offer is, of course, subject to favorable responses to prior work
references and academic accreditation.

Salary and Benefits
-------------------

The following statements summarize the proposed financial terms of your
employment:

   1.   Your commencing annual salary will be $210,000 to be reviewed January 1,
        2002 and thereafter on an annual basis without consideration being given
        to the sign-on bonus and guaranteed minimum bonus as stipulated below.

   2.   Sign-on bonus of $100,000: $50,000 to be paid on the start date; $25,000
        on the first anniversary of the start date and $25,000 on the second
        anniversary of the start date. If you resign, there will be a claw back
        of the amount paid within the past 12-month period.

   3.   You will be included in the Roper Industries Discretionary Annual Bonus
        Program. Bonuses in this program are paid in the first week of January
        for results achieved in the preceding fiscal year. If goals are fully
        met, you will be entitled to a bonus that represents 100% of your annual
        salary. For the first three years, you will be guaranteed a minimum
        bonus of $100,000 per year. If, however, the actual bonus amount earned
        in a particular year is greater than the guaranteed amount, the greater
        amount will be paid.

   4.   All unpaid sign-on bonus and unpaid guaranteed bonus amounts will vest
        immediately, and are payable, in the event of your termination or in the
        event of a Roper Industries change of control.

   5.   You will receive one year's salary and bonus as a severance payment if
        Roper terminates you other than for gross misconduct. Gross misconduct
        will be defined as a civil or criminal act or ethical misconduct
        committed against Roper Industries, Inc., it's employees, customers or
        suppliers.

   6.   You will be eligible to participate in Roper's Stock Option Program. On
        commencing employment, you will be granted 20,000 Roper Stock Options at
        the prevailing stock price and normal vesting period. Additional options
        could be made available on an annual basis as Roper continues to grow
        and your success contributes to Roper's performance.

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   7.   A company car will be provided similar to a Buick Park Avenue with all
        expenses for business and private use covered, subject to IRS rules.

   8.   You will be included in the corporation's benefits package, a summary of
        which is provided as a supplement to this letter. You will be eligible
        to participate in all benefits as of your start date with the exception
        of the 401(k) plan and the Employee Stock Purchase Plan as their
        eligibility rules do not allow for immediate participation and mandate
        the six-month waiting periods.

   9.   You will be eligible to participate from your start date in the Roper
        Industries, Inc. NonQualified Plan which allows unlimited compensation
        deferral on a pre-tax basis. After you become eligible for the 401(k)
        plan and begin participating in it, the NonQual Plan also becomes a
        vehicle for a continuation of the company match to the max allowed by
        the plan.

   10.  You will also be eligible for inclusion in our Executive Reimbursement
        Insurance Plan in which any out-of-pocket health, dental or vision
        expenses not covered by our normal plans are reimbursed.

   11.  Relocation reimbursement will be provided under our normal policy which
        includes all reasonable moving expenses through the mover with whom
        Roper has contracted to handle moves and relocations and including such
        out-of-pocket costs as utility deposits, closing costs, etc. We will
        also cover the costs of temporary living expenses for up to six months.
        These reimbursable expenses will also include the following:

                a)   selling costs, selling commission and brokerage fees
                     associated with the buying of new residence and selling of
                     current residence;
                b)   all escrow fees, miscellaneous transaction costs and other
                     fees associated with the buying of new residence and
                     selling of old residence;
                c)   house hunting trips as necessary;
                d)   movement and storage, if necessary, of household goods and
                     automobiles (5); and
                e)   income tax gross up for total value of relocation.

   12.  You will be eligible for initiation fees, monthly dues and business
        expenses to the Athens Country Club, assuming membership is available.

   13.  You will be eligible for four weeks of vacation per year.

Starting Date
-------------

Tom, I hope that the employment package extended in this letter is satisfactory
and you will commence employment on April 1, 2001. If you have any questions
regarding your employment package, please do not hesitate to call me.

As you are aware this is an important position we are endeavoring to fill and
hope you can accept this offer and return the signed page no later than February
23, 2001.

Kind Regards,

Derrick N. Key                                    Accepted
President, CEO and
Chairman of the Board
                                                  ______________________
                                                  C.Tom O' Grady<PAGE>
                                                                    Exhibit 4.23

                     FINANCIAL CONSULTING SERVICES AGREEMENT

     This Financial Consulting Services Agreement (the "Agreement") is entered
this 11th day of December, 2001 by and between M. Blaine Riley, Randall
Letcavage and Rosemary Nguyen ("Consultants"), individual's, and Patriot
Scientific Corporation (OTC BB: PTSC) ("Client"), a Delaware corporation, with
reference to the following:

                              Preliminary Statement

     A. The Client desires to be assured of the association and services of the
Consultants in order to avail itself of the Consultants experience, skills,
abilities, knowledge, and background to facilitate long range strategic
planning, and to advise the Client in business and/or financial matters and is
therefore willing to engage the Consultants upon the terms and conditions set
forth herein. Consultants desire to be assured, and Client desires to assure
Consultants, that, if Consultants associate with Client and allocates its
resources necessary to provide Client with its services as Client requires and
expects, Consultants will be paid the consideration described herein and said
consideration will be nonrefundable, regardless of the circumstances.

     B. The Consultants agree to be engaged and retained by the Client and upon
the terms and conditions set forth herein.

     NOW, THEREFORE, in consideration of the foregoing, of the mutual promises
hereinafter set forth and for other good and valuable consideration, the receipt
and sufficiency of which are hereby acknowledged, the parties hereto agree as
follows:

     1. Engagement. Client hereby engages Consultants on a non-exclusive basis,
and Consultants hereby accepts the engagement to become financial Consultants to
the Client and to render such advice, consultation, information, and services to
the Directors and/or Officers of the Client regarding general financial and
business matters including, but not limited to:

           a.  Strategic alliances, mergers and acquisitions;

           b.  Corporate planning, strategy and negotiations with potential
               strategic business partners and/or other general business
               consulting needs as expressed by Client;

           c.  Business development and business advertising;

           d.  B-Consulting providing business solutions;

           e.  Structuring and providing alternative sources for accounts
               receivable, purchase order and other asset financing.

           f.  Due diligence processes and Capital structures;

           g.  Periodic reporting as to developments concerning the general
               financial markets and public securities markets and industry
               which may be relevant or of interest or concern to the Client or
               the Client's business.

     Notwithstanding anything contained herein to the contrary, it is clearly
understood and agreed to by the parties hereto that the aforementioned services
to be provided by Consultants shall not involve any capital raising efforts or
promotion of the Client's securities. It shall be

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expressly understood that Consultants shall have no power to bind Client to any
contract or obligation or to transact any business in Client's name or on behalf
of Client in any manner.

     It is expressly understood and agreed by Client that, in reliance upon
Client's representations, warranties and covenants contained herein, immediately
upon execution and delivery of this Agreement by Client, Consultants are setting
aside and allocating for the benefit of Client valuable resources (including,
without limitation, capital and reservation of work schedules of employees)
required to fulfill Consultants' obligation described in paragraph B .1. hereof.
In doing so, Consultants agree to forebear from undertaking other opportunities
and commitments (that would result in enrichment to Consultants) in order to be
available to provide Client the services contemplated by this Agreement.

         2. Term. The term ("Term") of this Agreement shall commence on the date
hereof and continue for twelve (12) months. The Agreement may be extended upon
agreement by both parties, unless or until the Agreement is terminated. Either
party may cancel this Agreement upon five (5) days written notice in the event
either party violates any material provision of this Agreement and fails to cure
such violation within five (5) days of written notification of such violation
from the other party. Such cancellation shall not excuse the breach or
non-performance by the other party or relieve the breaching party of its
obligation incurred prior to the date of cancellation, including, without
limitation, the obligation of Client to pay the nonrefundable consideration
described in paragraph B.4. hereof.

         3. Due Diligence. The Client shall supply and deliver to the
Consultants all information relating to the Client Company's business as may be
reasonably requested by the Consultants to enable the Consultants to make an
assessment of the Client's company and business prospects and provide the
consulting services described in paragraph B.1. hereof.

         4. Compensation and Fees. As consideration for Consultants entering
into this Agreement, Client agrees to pay and deliver to Consultants the
following consideration, which consideration is nonrefundable regardless of the
circumstances:

           a.  Client shall issue certificates representing an aggregate of one
               million two hundred thousand (1,200,000) shares of free trading
               common stock (the "Shares"), registered under S-8.

               SHARES ARE PAYABLE IN TWO PAYMENTS: The FIRST PAYMENT of six
               hundred thousand (600,000) shares is due upon Consultants
               providing two (2) candidates for possible merger, acquisition or
               strategic alliance with client, and the SECOND PAYMENT of six
               hundred thousand (600,000) shares is due 60 days after the date
               hereof, as long as the Agreement has not been terminated by
               Client for any reason (regardless of paragraph B.2. above),
               within the first fifty (50) days from the date of the Agreement.

           b.  The Certificates shall be issued to the Consultants in the
               following manner for the FIRST PAYMENT:

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           M. Blaine Riley will receive two hundred thousand (200,000) shares.
           Randall Letcavage will receive two hundred thousand (200,000) shares.
           Rosemary Nguyen will receive two hundred thousand (200,000) shares.

                                      -AND-

           The Certificates shall be issued to the Consultants in the
           following manner for the SECOND PAYMENT:

           M. Blaine Riley will receive two hundred thousand (200,000) shares.
           Randall Letcavage will receive two hundred thousand (200,000) shares.
           Rosemary Nguyen will receive two hundred thousand (200,000) shares.

       The Shares, when issued to Consultants, will be duly authorized, validly
issued and outstanding, fully paid and nonassessable and will not be subject to
any liens or encumbrances.

       Securities shall be issued to Consultants in accordance with a mutually
acceptable plan of issuance as to relieve securities or Consultants from
restrictions upon transferability of shares in compliance with applicable
registration provisions or exemptions.

       After careful review and extensive discussions and negotiations between
Client and Consultants and their advisors, Client agrees that, when received by
Consultants, the above-described consideration shall be nonrefundable regardless
of the circumstances, whether foreseen or unforeseen upon execution and delivery
of this Agreement. Client further acknowledges and agrees that said
consideration is earned by Consultants: (1) upon Client's execution and delivery
of the Agreement and prior to the provision of any service hereunder; (2) in
part, by reason of Consultants' agreement to make its resources available to
serve Client and as further described in the Preliminary Statement and elsewhere
herein; and (3) regardless of whether Client seeks to terminate this Agreement
prior to consultants' delivery of any services hereunder. If Client takes any
action to terminate this Agreement or to recover any consideration paid or
delivered by Client to Consultants other than by reason of Consultants' gross
negligence or willful misconduct, Consultants shall be entitled to all available
equitable remedies, consequential and incidental damages and reasonable
attorneys' fees and costs incurred as a result thereof regardless of whether
suit is filed and regardless of whether Client or Consultants prevail in any
such suit.

         5. Representations, Warrants and Covenants. The Client represents,
warrants and covenants to the Consultants as follows:

          a.  The Client has the full authority, right, power and legal capacity
              to enter into this Agreement and to consummate the transactions
              which are provided for herein. The execution of this Agreement by
              the Client and its delivery to the Consultants, and the
              consummation by it of the transactions which are contemplated
              herein have been duly approved and authorized by all necessary
              action by the Client's Board of Directors and no further
              authorization shall be necessary on the part of

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              the Client for the performance and consummation by the Client of
              the transactions which are contemplated by this Agreement.

          b.  The business and operations of the Client have been and are being
              conducted in all material respects in accordance with all
              applicable laws, rules and regulations of all authorities which
              affect the Client or its properties, assets, businesses or
              prospects. The performance of this Agreement shall not result in
              any breach of, or constitute a default under, or result in the
              imposition of any lien or encumbrance upon any property of the
              Client or cause an acceleration under any arrangement, agreement
              or other instrument to which the Client is a party or by which any
              of its assets are bound. The Client has performed in all respects
              all of its obligations which are, as of the date of this
              Agreement, required to be performed by it pursuant to the terms of
              any such agreement, contract or commitment.

         6. Exclusivity; Performance; Confidentiality. The services of
Consultants hereunder shall not be exclusive, and Consultants and its agents may
perform similar or different services for other persons or entities whether or
not they are competitors of Client. The Consultants agree that it will, at all
times, faithfully and in a professional manner perform all of the duties that
may be reasonably required of the Consultants pursuant to the terms of this
Agreement. Consultants shall be required to expend only such time as is
necessary to service Client in a commercially reasonable manner. The Consultants
does not guarantee that its efforts will have any impact upon the Client's
business or that there will be any specific result or improvement from the
Consultants' efforts. Consultants acknowledges and agree that confidential and
valuable information proprietary to Client and obtained during its engagement by
the Client, shall not be, directly or indirectly, disclosed without the prior
express written consent of the Client, unless and until such information is
otherwise known to the public generally or is not otherwise secret and
confidential.

         7. Independent Contractor. In its performance hereunder, Consultants
and its agents shall be an independent contractor. Consultants shall complete
the services required hereunder according to his own means and methods of work,
shall be in the exclusive charge and control of Consultants and which shall not
be subject to the control or supervision of Client, except as to the results of
the work. Client acknowledges that nothing in this Agreement shall be construed
to require Consultants to provide services to Client at any specific time, or in
any specific place or manner. Payments to consultant hereunder shall not be
subject to withholding taxes or other employment taxes as required with respect
to compensation paid to an employee.

         8. Arbitration and Fees. Any controversy or claim arising out of or
relating to this Agreement, or breach thereof, may be resolved by mutual
agreement; or if not, shall be settled in accordance with the Arbitration rules
of the American Arbitration Association in Irvine, California. Any decision
issued therefrom shall be binding upon the parties and shall be enforceable as a
judgment in any court of competent jurisdiction. The prevailing party in such
arbitration or other proceeding shall be entitled, in addition to such other
relief as many be granted, to a reasonable sum as and for attorney's fees in
such arbitration or other proceeding which may be determined by the arbitrator
or other officer in such proceeding. If collection is

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required for any payment not made when due, the creditor shall collect statutory
interest and the cost of collection, including attorney's fees whether or not
court action is required for enforcement. The prevailing party in any such
proceeding shall also be entitled to reasonable attorneys' fees and costs in
connection all appeals of any judgment.

        9. Notices. Any notice or other communication required or permitted
hereunder must be in writing and sent by either (i) certified mail, postage
prepaid, return receipt requested and First Class mail; or (ii) overnight
delivery with confirmation of delivery; or (iii) facsimile transmission with an
original mailed by first class mail, postage prepaid, addressed as follows:

        If to the Client:     Patriot Scientific Corporation
                              Attention: Lowell W. Giffhorn
                              Address:   10989 Via Frontera
                                         San Diego, CA 92127
                              Facsimile No.: 858-674-5018

        If to Consultant:     Attention: M. Blaine Riley
                              33966 Crystal Lantern
                              Dana Point, CA 92629
                              Facsimile No: (949) 488-3444

                              Attention: Randall Letcavage
                              2603 Main Street, Suite #1150
                              Irvine, CA 92614
                              Facsimile No.: (949) 260-0116

                              Attention: Rosemary Nguyen
                              2603 Main Street, Suite #1150
                              Irvine, CA 92614
                              Facsimile No.: (949) 260-0116

or in each case to such other address and facsimile number as shall have last
been furnished by like notice. If mailing is impossible due to an absence of
postal service, and other methods of sending notice are not otherwise available,
notice shall be hand-delivered to the aforesaid addresses. Each notice or
communication shall be deemed to have been given as of the date so mailed or
delivered, as the case may be; provided, however, that any notice sent by
facsimile shall be deemed to have been given as of the date sent by facsimile if
a copy of such notice is also mailed by first class mail on the date sent by
facsimile; if the date of mailing is not the same as the date of sending by
facsimile, then the date of mailing by first class mail shall be deemed to be
the date upon which notice given.

         10. Additional Provisions. No waiver of any of the provisions of this
Agreement shall be deemed or shall constitute a waiver of any other provision
and no waiver shall constitute a continuing waiver. No waiver shall be binding
unless executed in writing by the party making the waiver. No supplement,
modification, or amendment of this Agreement shall be binding unless executed in
writing by all parties. This Agreement constitutes the entire agreement

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between the parties and supersedes any prior agreements or negotiations. There
are no third party beneficiaries of this Agreement. This Agreement shall be
governed by and construed in accordance with the internal laws of the State of
California, regardless of laws of conflicts.

         11. Counterparts. This Agreement may be executed simultaneously in one
or more counterparts, each of which shall be deemed an original, but all of
which together shall constitute one and the same instrument.

         12. Preliminary Statement. The Preliminary Statement is incorporated
herein by this reference and made a material part of this Agreement.

           IN WITNESS WHEREOF, the parties hereto have entered into this
Agreement on the date first written above.

                            "CLIENT"

                            Patriot Scientific Corporation
                            Signature:       /S/  LOWELL W. GIFFHORN
                            Print name:      Lowell W. Giffhorn
                            Print title:     Exec. V.P. & CFO

                            "CONSULTANTS"

                            Signature:       /S/  M. BLAINE RILEY
                            Print name:      M. Blaine Riley
                            Print title:     Consultant

                            Signature:       /S/  RANDALL LETCAVAGE
                            Print name:      Randall Letcavage
                            Print title:     Consultant

                            Signature:       /S/  ROSEMARY NGUYEN
                            Print name:      Rosemary Nguyen
                            Print title:     Consultant

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