Document:

Prepared for SI Diamond, Inc. by EDGARfile.net

Exhibit 4.5

TERMINATION AGREEMENT

            This Termination Agreement (“Agreement”)
by and among Western National Marketing, LLC, a Nevada limited liability company (“Western”), SI Diamond
Technology, Inc., a Texas corporation (“SID”), and Electronic Billboard Technology, Inc., a Delaware corporation
(“EBT”) is executed to be effective as of July 1, 2002.

W I T N E S S E T H:

            WHEREAS, Western, SID and EBT (collectively
“Parties”) have heretofore entered into various agreements relating to the marketing by Western of certain
products and services of EBT (“Agreements”);

            WHEREAS, the Parties have mutually agreed to terminate all of
the Agreements and the obligations of the respective Parties under and incident to the Agreements; and,

            WHEREAS, the Parties are entering into this Agreement for the
purpose of setting forth the terms and conditions of the termination of the Agreements.

            NOW, THEREFORE, for and in consideration of the premises and
other good and valuable consideration, the receipt and sufficiency of which the Parties jointly and severally acknowledge and
confess, the Parties hereby covenant and agree as follows:

1.

            Under the Agreements, the only unperformed obligation of any
of the Parties is the required issuance by SID to, or for the account of, Western of seventy-five thousand (75,000) shares of the
$.001 par value common capital stock of SID (“Shares”).

2.

            Subject only to the issuance of the Shares to Western by SID
as hereinafter provided, the Parties do hereby terminate the Agreements and all obligations of each of the Parties to the other
Parties under and incident to the Agreements.

3.

            Concurrently with execution of this Agreement, SID shall, at
the request of Western, issue the Shares for the account of Western, and in full satisfaction of all obligations of SID with
respect to the Shares, as follows:

                       

  
  	 
           
Recipient:

      	Shares:

      
	Denton Holdings Nevada, Inc.

      	 18,332

      
	 Hurst Marketing Group, Inc.

      	 18,334

      
	Catalogcollections.com,
inc.

      	 18,334

      
	To Serve Man,
Inc.

      	 20,000

      

  

   

            IN WITNESS WHEREOF, the Parties have executed this Agreement
to be effective as hereinabove provided.

                       
                       
           
            SID

                       
                       
           
            SI Diamond Technology, Inc.,

                       
                       
                       
    a Texas corporation

                       
                       
           
            By:  /s/
Marc W. Eller     
                       
           

                       
                       
                       
            Marc W. Eller, CEO

                       
                       
           
            EBT

                       
                       
           
            Electronic Billboard Technology, Inc.,

                       
                       
                       
    a Delaware corporation

                       
                       
           
            By:   /s/
Marc W. Eller      
                                  

                       
                       
                       
            Marc W. Eller, CEO

                       
                       
           
            WESTERN

                       
                       
           
            Western National Marketing,
LLC,

                       
                       
                       
    a Nevada limited liability company

                       
                       
           
            By:  /s/
Michael G. Denton, Jr.                  
           

                       
                       
                       
            Michael G. Denton, Jr., ManagerADDENDUM TO PATENT LICENSE AGREEMENT

EXHIBIT 4.6

 

ADDENDUM TO PATENT LICENSE AGREEMENT

THIS ADDENDUM, effective upon execution by the parties hereto, is entered into by SI Diamond Technology, Inc., a corporation of
Texas having its principal place of business at Austin, Texas (herein called SIDT or "Licensee"), and Till Keesmann, an individual
having an address at Heidelberg, Germany (herein called "Licensor"). 

NOW, THEREFORE, in consideration of the mutual promises and covenants contained herein, it is hereby agreed as follows:

ARTICLE 15.  CONTINUATION OF THE PATENT LICENSE AGREEMENT WITH CERTAIN

                          NEW OBLIGATIONS

	

 

    	

15.00

    	

 The Patent License Agreement between the parties dated May 26, 2000, continues uninterrupted and with all of
its original provisions intact and binding upon the parties, except that the Patent License Agreement provision for payment at
Paragraph 6.02(a) thereof is struck, and replaced by the payment provisions described hereinafter, which new provisions shall
henceforth be considered an obligation under the Patent License Agreement.

    
	

 

    	

15.01

    	

 Licensee shall pay to Licensor an aggregate of $500,000 U.S. dollars, no later than November 15, 2002. 
Failure to make payment, in the aggregate, of $500,000 results in this License being terminated.

    
	

 

    	

15.02

    	

 As a first portion payment toward the aggregate $500,000, Licensee shall pay to Licensor, forthwith after the
effective date of this Addendum, $100,000 U.S. dollars, which will be realized by the sale of SIDT common stock either:
i) issued
to Licensor with such stock able to be sold by Licensor after the registration of

    

   

	

 

    	

    	

 such SIDT common stock becomes effective or ii)
not issued to Licensor, but the proceeds from such sale in the amount of $100,000 being paid to Licensor in cash.   
Licensee shall give Licensor immediate notice when the registration becomes effective.  The number of shares of such stock is
to be determined by dividing $100,000 by the market price of SIDT's common stock.  The market price will be determined by
taking the average closing price of SIDT's common stock, as quoted on the NASDAQ OTC Bulletin Board System, for the five trading
days preceding the date the registration statement covering the shares issued in connection with this Agreement is declared
effective.  If Licensor sells any of the shares issued to him in the five trading day period beginning the day after the
registration statement covering these shares is declared effective, and the net proceeds from the sale of those shares are less
than the market price (as defined above) times the number of shares sold, Licensee agrees to issue additional shares of common
stock, or an equivalent amount of cash, to make up the shortfall.  To determine if any additional payment is due under this
Agreement, all calculations will be made on an aggregate basis.  If shares are sold at prices both above and below the market
price as defined above, total net proceeds will be compared with the total number of shares times the market value as defined
above.  Licensor accepts all market risk on all shares still held at the end of the five day trading period beginning after
the registration statement is declared effective.  If a portion of the shares are sold, all calculations will be made on a
pro-rata basis.  For example, if one-half of the shares received by Licensor are sold during the five day trading period,
Licensee will make up the shortfall, if any, on the shares sold

    

   

	

 

    	 

    	

 as compared to one-half of the expected market value. 
Licensor will bear the market risk for the remaining one-half of the shares that were not sold, regardless of the market price of
the SIDT common stock at the end of the five day trading period. 

    
	 	15.03	
       As balance of payment toward the aggregate of $500,000, Licensee shall pay to Licensor $400,000 U.S. dollars,
in cash, by November 15, 2002, or earlier, to the extent practicable, should patent counsel report that the U.S. Patent Examiner in
charge of the reissue application based on U.S. Patent 5,773,921 has agreed to allow broadened claim 10 in essentially the form as
presently pending.

	 	15.04	
       Licensee shall, forthwith after the effective date of this Addendum, pay, in cash, the outstanding invoices of
Thomas I. Ross, Esq., relating to the subject matter of   the Patent License Agreement and totaling $21,219.71, to the
respective billing law firms of Rockey, Milnamow & Katz and Marshall, Gerstein &
      Borun.

	 	15.05	
       If the payments described herein are not diligently made, Licensor may terminate the Patent License Agreement
upon written notice to Licensee. 

 

           
IN WITNESS THEREOF the parties have caused this Addendum to
be executed by their duly authorized officers on the respective dates and at the respective places hereinafter set forth.

   

TILL KEESMANN

                       
                       
                       
            By: ______________________________

                       
                       
                       
           
            Name: Till Keesmann

Signed at: __________________           
                       
        Date: ______________________

 

                       
           
           
                       
            By: _____________________________

                       
                       
                       
           
            Name: Hubert Grosse-Wilde

Signed at: __________________           
                       
        Date: ______________________

 

SI DIAMOND TECHNOLOGY, INC.

                       
                       
                       
            By:   
/s/ Marc W. Eller                          
 

                       
                       
                       
           
            Name: Marc W. Eller

                       
                       
                       
           
            Title: CEO

Signed at:   Austin,
Texas            
                       
            Date:     
8/7/02

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