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Patent Assignment Details

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Reel/Frame:	008732/0302			Pages:	13
		Recorded:	09/16/1997
Conveyance:	SECURITY AGREEMENT

Total properties: 39

Patent #:	D311444	Issue Dt:	10/16/1990	Application #:	06804357	Filing Dt:	11/08/1985
Title:	WALL BLOCK

Patent #:	D301064	Issue Dt:	05/09/1989	Application #:	06863399	Filing Dt:	05/14/1986
Title:	CONVEX BLOCK

Patent #:	D301064	Issue Dt:	05/09/1989	Application #:	06863399	Filing Dt:	05/14/1986
Title:	CONVEX BLOCK

Patent #:	D296007	Issue Dt:	05/31/1988	Application #:	06867372	Filing Dt:	05/27/1986
Title:	WALL BLOCK

Patent #:	D296007	Issue Dt:	05/31/1988	Application #:	06867372	Filing Dt:	05/27/1986
Title:	WALL BLOCK

Patent #:	D297574	Issue Dt:	09/06/1988	Application #:	06869933	Filing Dt:	06/02/1986
Title:	WALL BLOCK

Patent #:	D297574	Issue Dt:	09/06/1988	Application #:	06869933	Filing Dt:	06/02/1986
Title:	WALL BLOCK

Patent #:	D297464	Issue Dt:	08/30/1988	Application #:	06870860	Filing Dt:	06/02/1986
Title:	WALL BLOCK

Patent #:	D296365	Issue Dt:	06/21/1988	Application #:	06909097	Filing Dt:	09/18/1986
Title:	CONSTRUCTION BLOCK

Patent #:	D296365	Issue Dt:	06/21/1988	Application #:	06909097	Filing Dt:	09/18/1986
Title:	CONSTRUCTION BLOCK

Patent #:	D295790	Issue Dt:	05/17/1988	Application #:	06914615	Filing Dt:	10/01/1986
Title:	STARTER WALL BLOCK

Patent #:	D295790	Issue Dt:	05/17/1988	Application #:	06914615	Filing Dt:	10/01/1986
Title:	STARTER WALL BLOCK

Patent #:	D295788	Issue Dt:	05/17/1988	Application #:	07013383	Filing Dt:	02/11/1987
Title:	WALL BLOCK

Patent #:	D299067	Issue Dt:	12/20/1988	Application #:	07033178	Filing Dt:	04/02/1987
Title:	MODULAR BLOCK WALL

Patent #:	D297767	Issue Dt:	09/20/1988	Application #:	07047450	Filing Dt:	05/11/1987
Title:	BLOCK WALL

Patent #:	4825619	Issue Dt:	05/02/1989	Application #:	07053757	Filing Dt:	05/26/1987
Title:	BLOCK WALL

Patent #:	D298463	Issue Dt:	11/08/1988	Application #:	07059481	Filing Dt:	06/08/1987
Title:	RETAINING WALL BLOCK

Patent #:	4802320	Issue Dt:	02/07/1989	Application #:	07116228	Filing Dt:	11/03/1987
Title:	WALL AND BLOCK THEREFOR

Patent #:	4802320	Issue Dt:	02/07/1989	Application #:	07116228	Filing Dt:	11/03/1987
Title:	WALL AND BLOCK THEREFOR

Patent #:	D300253	Issue Dt:	03/14/1989	Application #:	07202431	Filing Dt:	06/06/1988
Title:	RETAINING WALL BLOCK

Patent #:	D300253	Issue Dt:	03/14/1989	Application #:	07202431	Filing Dt:	06/06/1988
Title:	RETAINING WALL BLOCK

Patent #:	D300254	Issue Dt:	03/14/1989	Application #:	07202993	Filing Dt:	06/06/1988
Title:	RETAINING WALL BLOCK

Patent #:	D300254	Issue Dt:	03/14/1989	Application #:	07202993	Filing Dt:	06/06/1988
Title:	RETAINING WALL BLOCK

Patent #:	D317048	Issue Dt:	05/21/1991	Application #:	07273873	Filing Dt:	11/21/1988
Title:	WALL BLOCK

Patent #:	D316904	Issue Dt:	05/14/1991	Application #:	07273874	Filing Dt:	11/21/1988
Title:	CONVEX BLOCK

Patent #:	D317209	Issue Dt:	05/28/1991	Application #:	07280301	Filing Dt:	12/05/1988
Title:	CORNER WALL BLOCK

Patent #:	4914876	Issue Dt:	04/10/1990	Application #:	07287286	Filing Dt:	12/20/1988
Title:	RETAINING WALL WITH FLEXIBLE MECHANICAL SOIL STABLEZING SHEET

Patent #:	RE34314	Issue Dt:	07/20/1993	Application #:	07653194	Filing Dt:	02/06/1991
Title:	BLOCK WALL

Patent #:	RE34314	Issue Dt:	07/20/1993	Application #:	07653194	Filing Dt:	02/06/1991
Title:	BLOCK WALL

Patent #:	D380560	Issue Dt:	07/01/1997	Application #:	07886983	Filing Dt:	05/21/1992
Title:	THREE FACETED BROKEN FRONT FACE OF A RETAINING WALL BLOCK

Patent #:	D380560	Issue Dt:	07/01/1997	Application #:	07886983	Filing Dt:	05/21/1992
Title:	THREE FACETED BROKEN FRONT FACE OF A RETAINING WALL BLOCK

Patent #:	5568994	Issue Dt:	10/29/1996	Application #:	08245869	Filing Dt:	05/19/1994
Title:	LANDSCAPING BLOCK

Patent #:	5568994	Issue Dt:	10/29/1996	Application #:	08245869	Filing Dt:	05/19/1994
Title:	LANDSCAPING BLOCK

Patent #:	5588262	Issue Dt:	12/31/1996	Application #:	08246256	Filing Dt:	05/19/1994
Title:	LANDSCAPING BLOCK SYSTEM

Patent #:	5551809	Issue Dt:	09/03/1996	Application #:	08298415	Filing Dt:	08/30/1994
Title:	EMBANKMENT WALL CONSTRUCTION AND METHOD AND BLOCK CONSTRUCTION FOR MAKING THE SAME

Patent #:	5551809	Issue Dt:	09/03/1996	Application #:	08298415	Filing Dt:	08/30/1994
Title:	EMBANKMENT WALL CONSTRUCTION AND METHOD AND BLOCK CONSTRUCTION FOR MAKING THE SAME

Patent #:	5601384	Issue Dt:	02/11/1997	Application #:	08480287	Filing Dt:	06/07/1995
Title:	PLANTABLE RETAINING WALL

Patent #:	5601384	Issue Dt:	02/11/1997	Application #:	08480287	Filing Dt:	06/07/1995
Title:	PLANTABLE RETAINING WALL

Patent #:	D381086	Issue Dt:	07/15/1997	Application #:	29038326	Filing Dt:	05/03/1995
Title:	FRONT FACE OR A RETAINING WALL BLOCK

Assignor

KEYSTONE RETAINING WALL SYSTEMS, INC.

Exec Dt:

09/15/1997

Assignee

U.S. BANK NATIONAL ASSOCIATION

601 SECOND AVENUE SOUTH

MINNEAPOLIS, MINNESOTA 55402

Correspondence name and address
	FABYANSKE, WESTRA & HART, P.A.
	JEREMIAH J. KEARNEY, ESQ.
	920 SECOND AVENUE SOUTH
	SUITE 1100
	MINNEAPOLIS, MN 55402

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