Sixth Amendment to Loan Agreement dated as of January 13, 2004



 Exhibit 10.2 
  
 SIXTH AMENDMENT TO LOAN AGREEMENT 
  
 THIS SIXTH AMENDMENT TO LOAN AGREEMENT (this “Amendment”), dated as of January 13, 2004, is between CONCORD TECHNOLOGIES, LP, a Texas limited
partnership (“Concord”), GEOSPACE ENGINEERING RESOURCES INTERNATIONAL, LP, a Texas limited partnership (“Engineering”), GEOSPACE TECHNOLOGIES, LP, a Texas limited partnership, formerly known as Geo Space, LP (“Geo
Space”), OYO INSTRUMENTS, LP, a Texas limited partnership (“Instruments”), and OYOG OPERATIONS, LP, a Texas limited partnership (“Operations”, and together with Concord, Engineering, Geo Space and Instruments, the
“Borrowers”), jointly and severally, and SOUTHWEST BANK OF TEXAS, N.A., a national banking association (“Lender”). 
  
 RECITALS: 
  
 A. Geo Space was formerly named Geo Space, LP. On March 5, 2003, Geo Space changed its name from “Geo Space, LP” to “Geospace Technologies,
LP.” 
  
 B. Borrowers and Lender entered into that certain
Loan Agreement dated as of February 16, 2001, as amended by First Amendment to Loan Agreement dated as of February 17, 2001, Second Amendment to Loan Agreement dated as of January 15, 2002, Third Amendment to Loan Agreement dated as of January 14,
2003, Fourth Amendment to Loan Agreement dated as of March 31, 2003 and Fifth Amendment to Loan Agreement dated as of December 5, 2003 (the “Agreement”). 
  
 C. Pursuant to the Agreement, OYOG, LLC, a Delaware limited liability company, OYO Geospace Corporation, a Delaware
corporation, and OYOG Limited Partner, LLC, a Nevada limited liability company (“Guarantors”), executed those certain Guaranty Agreements dated as of January 15, 2002 (the “Guaranty Agreements”), pursuant to which Guarantors
guaranteed to Lender the payment and performance of the Obligations (as defined in the Agreement). 
  
 D. Borrowers and Lender now desire to amend the Agreement as herein set forth. 
  
 NOW, THEREFORE, in consideration of the premises herein contained and other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the parties hereto agree as follows: 
  

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 ARTICLE I. 
  
 Definitions 
  
 Section 1.1. Definitions. Capitalized terms used in this Amendment, to the extent not otherwise defined herein, shall have the meanings given to
such terms in the Agreement, as amended hereby. 
  
 ARTICLE II.

  
 Amendments 
  
 Section 2.1. Amendment to Certain Definitions. The definition of the
term “Termination Date” contained in Section 1.1 of the Agreement is amended to read in its entirety as follows: 
  
 “Termination Date-A” means 11:00 a.m., Houston, Texas time on February 28, 2004, or such earlier date on which the
Commitment-A terminates as provided in this Agreement. 
  
 Section
2.2. Amendment to Exhibits. Exhibit “A” to the Agreement (Note-A) is amended to conform in its entirety to Annex “A” to this Amendment. 
  
 ARTICLE III. 
  
 Conditions Precedent 
  
 Section 3.1. Conditions. The effectiveness of this Amendment is subject to the receipt by Lender of the following in form and substance
satisfactory to Lender: 
  
 (a) Certificate -
Borrowers. A certificate of the Secretary or the Assistant Secretary (or another officer acceptable to Lender) of each Borrower certifying resolutions of the board of directors of the General Partner as general partner of each Borrower which
authorize the execution, delivery and performance by each Borrower of this Amendment and the other Loan Documents to which such Person is or is to be a party. 
  

(b) Note-A. Note-A executed by Borrowers. 
  

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 (c) Additional Information. Such additional documents, instruments and information
as Lender may request. 
  
 Section 3.2. Additional
Conditions. The effectiveness of this Amendment is also subject to the satisfaction of the additional conditions precedent that (a) the representations and warranties contained herein and in all other Loan Documents, as amended hereby, shall be
true and correct as of the date hereof as if made on the date hereof, (b) all proceedings, corporate or otherwise, taken in connection with the transactions contemplated by this Amendment and all documents, instruments and other legal matters
incident thereto shall be satisfactory to Lender. 
  
 ARTICLE IV.

  
 Ratifications, Representations, and Warranties 
  
 Section 4.1. Ratifications. The terms and provisions set forth in this
Amendment shall modify and supersede all inconsistent terms and provisions set forth in the Agreement and except as expressly modified and superseded by this Amendment, the terms and provisions of the Agreement are ratified and confirmed and shall
continue in full force and effect. Borrowers and Lender agree that the Agreement as amended hereby shall continue to be the legal, valid and binding obligation of such Persons enforceable against such Persons in accordance with its terms.

  
 Section 4.2. Representations, Warranties and
Agreements. Each Borrower hereby represents and warrants to Lender that (a) the execution, delivery, and performance of this Amendment and any and all other Loan Documents executed or delivered in connection herewith have been authorized by all
requisite action on the part of such Borrower and General Partner and will not violate the Organizational Documents of such Borrower, (b) the representations and warranties contained in the Agreement as amended hereby, and all other Loan Documents
are true and correct on and as of the date hereof as though made on and as of the date hereof, (c) no Event of Default or Unmatured Event of Default has occurred and is continuing, (d) Borrower is in full compliance with all covenants and agreements
contained in the Agreement as amended hereby, (e) Borrower is indebted to Lender pursuant to the terms of Note-A, as the same may have been renewed, modified, extended and rearranged, including, without limitation, renewals, modifications and
extensions made pursuant to this Amendment, (f) the liens, security interests, encumbrances and assignments created and evidenced by the Loan Documents are, respectively, valid and subsisting liens, security interests, encumbrances and assignments
and secure Note-A as the same may have been renewed, modified or rearranged, including, without limitation, renewals, modifications and extensions made pursuant to this Amendment and (g) Borrower has no claims, credits, offsets, defenses or
counterclaims arising from the Loan Documents or Lender’s performance under the Loan Documents. 
  

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 ARTICLE V. 
  
 Miscellaneous 
  
 Section 5.1. Reference to Agreement. Each of the Loan Documents, including the Agreement and any and all other agreements, documents, or
instruments now or hereafter executed and delivered pursuant to the terms hereof or pursuant to the terms of the Agreement, as amended hereby, are hereby amended so that any reference in such Loan Documents to the Agreement shall mean a reference to
the Agreement, as amended hereby. 
  
 Section 5.2.
Severability. Any provision of this Amendment held by a court of competent jurisdiction to be invalid or unenforceable shall not impair or invalidate the remainder of this Amendment and the effect thereof shall be confined to the provision so
held to be invalid or unenforceable. 
  
 Section 5.3.
APPLICABLE LAW. THIS AMENDMENT AND ALL OTHER LOAN DOCUMENTS EXECUTED PURSUANT HERETO SHALL BE DEEMED TO HAVE BEEN MADE AND TO BE PERFORMABLE IN HOUSTON, HARRIS COUNTY, TEXAS AND SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS
OF THE STATE OF TEXAS. 
  
 Section 5.4. Successors and
Assigns. This Amendment is binding upon and shall inure to the benefit of Lender and Borrowers and their respective successors and assigns, except no Borrower may assign or transfer any of its rights or obligations hereunder without the prior
written consent of Lender. 
  
 Section 5.5. Counterparts.
This Amendment may be executed in one or more counterparts, each of which when so executed shall be deemed to be an original, but all of which when taken together shall constitute one and the same instrument. 
  
 Section 5.6. Effect of Waiver. No consent or waiver, express or
implied, by Lender to or for any breach of or deviation from any covenant, condition or duty by Borrowers shall be deemed a consent or waiver to or of any other breach of the same or any other covenant, condition or duty. 
  
 Section 5.7. ENTIRE AGREEMENT. THIS AMENDMENT AND ALL OTHER
INSTRUMENTS, DOCUMENTS, AND AGREEMENTS EXECUTED AND DELIVERED IN CONNECTION WITH THIS AMENDMENT EMBODY THE FINAL, ENTIRE AGREEMENT AMONG THE PARTIES HERETO WITH RESPECT TO THE SUBJECT MATTER HEREOF AND 
  

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 THEREOF AND SUPERSEDE ANY AND ALL PRIOR COMMITMENTS, AGREEMENTS, REPRESENTATIONS AND UNDERSTANDINGS, WHETHER WRITTEN
OR ORAL, RELATING TO THE SUBJECT MATTER HEREOF AND THEREOF, AND MAY NOT BE CONTRADICTED OR VARIED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS OR SUBSEQUENT ORAL AGREEMENTS OR DISCUSSIONS OF THE PARTIES HERETO. THERE ARE NO UNWRITTEN ORAL AGREEMENTS AMONG
THE PARTIES HERETO. 
  
 Executed as of the date first written
above. 
  

					
	 BORROWERS:

	
	 CONCORD TECHNOLOGIES, LP

		
	 By:
	 	 OYOG, LLC, its general partner

			
	 	 	 By:
	 	 /s/ Thomas T. McEntire


	 	 	 	 	 Thomas T. McEntire

	 	 	 	 	 Vice President and

	 	 	 	 	 Chief Financial Officer

	
	GEOSPACE ENGINEERING RESOURCES INTERNATIONAL, LP
		
	 By:
	 	 OYOG, LLC, its general partner

			
	 	 	 By:
	 	 /s/ Thomas T. McEntire


	 	 	 	 	 Thomas T. McEntire

	 	 	 	 	 Vice President and

	 	 	 	 	 Chief Financial Officer



  

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	 GEOSPACE TECHNOLOGIES, LP

		
	 By:
	 	 OYOG, LLC, its general partner

			
	 	 	 By:
	 	 /s/ Thomas T. McEntire


	 	 	 	 	 Thomas T. McEntire

	 	 	 	 	 Vice President and

	 	 	 	 	 Chief Financial Officer

	
	 OYO INSTRUMENTS, LP

		
	 By:
	 	 OYOG, LLC, its general partner

			
	 	 	 By:
	 	 /s/ Thomas T. McEntire


	 	 	 	 	 Thomas T. McEntire

	 	 	 	 	 Vice President and

	 	 	 	 	 Chief Financial Officer

	
	 OYOG OPERATIONS, LP

		
	 By:
	 	 OYOG, LLC, its general partner

			
	 	 	 By:
	 	 /s/ Thomas T. McEntire


	 	 	 	 	 Thomas T. McEntire

	 	 	 	 	 Vice President and

	 	 	 	 	 Chief Financial Officer



  

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	 LENDER:

	
	 SOUTHWEST BANK OF TEXAS, N.A.

		
	 By:
	 	 /s/ Edward K. Bowdon


	 	 	 Edward K. Bowdon

	 	 	 Vice President



  

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 Each of the undersigned Guarantors hereby consents and agrees to this Amendment and agrees that the
Guaranty Agreement executed by such person shall remain in full force and effect and shall continue to be the legal, valid and binding obligations of such Guarantor, enforceable against such Guarantor in accordance with its terms and shall evidence
such Guarantor’s guaranty of Note-A, as renewed and extended from time to time, including, without limitation, the renewal and extension evidenced by Note-A in substantially the form of Annex “A” attached hereto. 
  

			
	 OYOG, LLC

		
	 By:
	 	 /s/ Thomas T. McEntire


	 	 	 Thomas T. McEntire

	 	 	 Vice President and

	 	 	 Chief Financial Officer

	
	 OYOG LIMITED PARTNER, LLC

		
	 By:
	 	 /s/ Thomas T. McEntire


	 	 	 Thomas T. McEntire

	 	 	 Manager

	
	 OYO GEOSPACE CORPORATION

		
	 By:
	 	 /s/ Thomas T. McEntire


	 	 	 Thomas T. McEntire

	 	 	 Vice President and

	 	 	 Chief Financial Officer



  

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 LIST OF ANNEXES 
  

			
	 Annex

	  	Document


	 A
	  	Note-A

  

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 ANNEX “A” 
  
 Note-A 
  

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