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Patent Assignment Details

NOTE:Results display only for issued patents and published applications. For pending or abandoned applications please consult USPTO staff.

Reel/Frame:	013231/0312			Pages:	7
		Recorded:	06/03/2002
Conveyance:	ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).

Total properties: 14

Patent #:	4682987	Issue Dt:	07/28/1987	Application #:	06755316	Filing Dt:	07/15/1985
Title:	METHOD AND COMPOSITION FOR PRODUCING HARD SURFACE CARBIDE INSERT TOOLS

Patent #:	5180022	Issue Dt:	01/19/1993	Application #:	07704885	Filing Dt:	05/23/1991
Title:	ROTARY MINING TOOLS

Patent #:	D340248	Issue Dt:	10/12/1993	Application #:	07706113	Filing Dt:	05/23/1991
Title:	ROOF DRILL BIT FOR MINING

Patent #:	5303787	Issue Dt:	04/19/1994	Application #:	08004682	Filing Dt:	01/14/1993
Title:	ROTARY MINING TOOLS AND METHODS FOR ROCK MINING

Patent #:	5383526	Issue Dt:	01/24/1995	Application #:	08116527	Filing Dt:	09/07/1993
Title:	METHODS FOR ROCK MINING WITH NON-CORING ROTARY TOOLS

Patent #:	5535839	Issue Dt:	07/16/1996	Application #:	08483305	Filing Dt:	06/07/1995
Title:	ROOF DRILL BIT WITH RADIAL DOMED PCD INSERTS

Patent #:	5875858	Issue Dt:	03/02/1999	Application #:	08689667	Filing Dt:	08/13/1996
Title:	LOW VOLUME AIR-WATER DRILLING SYSTEMS AND METHODS

Patent #:	6092612	Issue Dt:	07/25/2000	Application #:	09046382	Filing Dt:	03/23/1998
Title:	ROTARY DRILLING SYSTEMS

Patent #:	6161635	Issue Dt:	12/19/2000	Application #:	09260159	Filing Dt:	03/01/1999
Title:	DRILLING SYSTEM DRIVE STEEL

Patent #:	6374933	Issue Dt:	04/23/2002	Application #:	09400510	Filing Dt:	09/20/1999
Title:	TRACK VEHICLE TRACK WIDTH ADJUSTMENT

Patent #:	6427782	Issue Dt:	08/06/2002	Application #:	09741589	Filing Dt:	12/19/2000
Publication #:	US20010013428	Pub Dt:	08/16/2001
Title:	NOISE SUPPRESSION DRILLING SYSTEM

Patent #:	D351174	Issue Dt:	10/04/1994	Application #:	29010851	Filing Dt:	07/19/1993
Title:	ROOF DRILL BIT FOR MINING MACHINE

Patent #:	D430578	Issue Dt:	09/05/2000	Application #:	29094716	Filing Dt:	10/08/1998
Title:	ROTARY MINING BIT

Patent #:	D424579	Issue Dt:	05/09/2000	Application #:	29104622	Filing Dt:	05/10/1999
Title:	ROTARY MINING BIT

Assignor

Exec Dt:

05/18/2002

Assignee

1767 WISHINGWELL DRIVE

CREVE COEUR, MISSOURI 63141

Correspondence name and address
	SENNIGER, POWERS, LEAVITT, ET AL.
	RICHARD G. HEYWOOD
	ONE METROPOLITAN SQUARE
	16TH FLOOR
	ST. LOUIS, MO 63102

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