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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:	005370/0475			Pages:	8
		Recorded:	07/05/1990
Conveyance:	ASSIGNMENT OF ASSIGNORS INTEREST.

Total properties: 17

Patent #:	4350215	Issue Dt:	09/21/1982	Application #:	06189370	Filing Dt:	09/22/1980
Title:	DRILL BIT AND METHOD OF MANUFACTURE

Patent #:	4453605	Issue Dt:	06/12/1984	Application #:	06259182	Filing Dt:	04/30/1981
Title:	DRILL BIT AND METHOD OF METALLURGICAL AND MECHANICAL HOLDING OF CUTTERS IN A DRILL BIT

Patent #:	4505342	Issue Dt:	03/19/1985	Application #:	06443657	Filing Dt:	11/22/1982
Title:	DRILL BIT

Patent #:	4538690	Issue Dt:	09/03/1985	Application #:	06468668	Filing Dt:	02/22/1983
Title:	PDC CUTTER AND BIT

Patent #:	4558753	Issue Dt:	12/17/1985	Application #:	06468669	Filing Dt:	02/22/1983
Title:	DRAG BIT AND CUTTERS

Patent #:	4605157	Issue Dt:	08/12/1986	Application #:	06575555	Filing Dt:	01/31/1984
Title:	DRILL BIT MANUFACTURING METHOD

Patent #:	4570725	Issue Dt:	02/18/1986	Application #:	06575556	Filing Dt:	01/31/1984
Title:	DRILL BIT CUTTER

Patent #:	4640375	Issue Dt:	02/03/1987	Application #:	06578182	Filing Dt:	02/08/1984
Title:	DRILL BIT AND CUTTER THEREFOR

Patent #:	4593777	Issue Dt:	06/10/1986	Application #:	06578183	Filing Dt:	02/08/1984
Title:	DRAG BIT AND CUTTERS

Patent #:	4669556	Issue Dt:	06/02/1987	Application #:	06693848	Filing Dt:	01/25/1985
Title:	DRILL BIT AND CUTTER THEREFOR

Patent #:	4718505	Issue Dt:	01/12/1988	Application #:	06754506	Filing Dt:	07/12/1985
Title:	ROTARY DRILL BITS

Patent #:	4660659	Issue Dt:	04/28/1987	Application #:	06763031	Filing Dt:	08/06/1985
Title:	DRAG TYPE DRILL BIT

Patent #:	4676324	Issue Dt:	06/30/1987	Application #:	06823681	Filing Dt:	01/29/1986
Title:	DRILL BIT AND CUTTER THEREFOR

Patent #:	4711144	Issue Dt:	12/08/1987	Application #:	06870075	Filing Dt:	06/03/1986
Title:	DRILL BIT AND METHOD OF MANUFACTURE

Patent #:	4727946	Issue Dt:	03/01/1988	Application #:	06876847	Filing Dt:	06/20/1986
Title:	ROTARY DRILL BITS

Patent #:	4790396	Issue Dt:	12/13/1988	Application #:	06879137	Filing Dt:	06/26/1986
Title:	ROTARY DRILL BITS FOR USE IN CORING HOLES IN SUBSURFACE FORMATIONS

Patent #:	4862977	Issue Dt:	09/05/1989	Application #:	07033072	Filing Dt:	03/31/1987
Title:	DRILL BIT AND CUTTER THEREFOR

Assignor

Exec Dt:

08/24/1987

Assignee

7030 ARDMORE,

HOUSTON,, TEXAS 77059

Correspondence name and address
	FULBRIGHT & JAWORSKI
	1301 MCKINNEY, STE. 5100
	HOUSTON, TX 77010-3095

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