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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:	007613/0782			Pages:	4
		Recorded:	01/24/1996
Conveyance:	RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS).

Total properties: 37

Patent #:	4086029	Issue Dt:		Application #:	05747569	Filing Dt:
Title:

Patent #:	4137933	Issue Dt:	02/06/1979	Application #:	05768040	Filing Dt:	02/14/1977
Title:	CONTROL VALVE

Patent #:	4179947	Issue Dt:		Application #:	05824346	Filing Dt:
Title:

Patent #:	4197766	Issue Dt:		Application #:	05933269	Filing Dt:
Title:

Patent #:	4231671	Issue Dt:	11/04/1980	Application #:	05958458	Filing Dt:	11/06/1978
Title:	ECCENTRIC SHAFT AND METHOD OF MAKING A SHAFT

Patent #:	4262742	Issue Dt:	04/21/1981	Application #:	06066631	Filing Dt:	08/15/1979
Title:	DOWNHOLE SEAL FOR LOW PROFILE OIL WELL PUMPING INSTALLATIONS

Patent #:	4431052	Issue Dt:	02/14/1984	Application #:	06207946	Filing Dt:	11/18/1980
Title:	DOWNHOLE SEAL FOR LOW PROFILE OIL WELL PUMPING INSTALLATIONS

Patent #:	4434971	Issue Dt:	03/06/1984	Application #:	06233561	Filing Dt:	02/11/1981
Title:	DRILLING RIG DRAWWORKS HOOK LOAD OVERSPEED PREVENTING SYSTEM

Patent #:	4409027	Issue Dt:	10/11/1983	Application #:	06393192	Filing Dt:	06/28/1982
Title:	ALLOY STEEL FOR ROLL CASTER SHELL

Patent #:	4467703	Issue Dt:	08/28/1984	Application #:	06411932	Filing Dt:	08/26/1982
Title:	IMPROVED RECIPROCABLE PUMP

Patent #:	4513889	Issue Dt:	04/30/1985	Application #:	06452953	Filing Dt:	12/27/1982
Title:	RECLOSABLE VALVE WITH REMOVABLE HERMETIC EXTERNAL SEAL MEANS

Patent #:	4522450	Issue Dt:	06/11/1985	Application #:	06489116	Filing Dt:	04/27/1983
Title:	BRAKE SYSTEM

Patent #:	4487222	Issue Dt:	12/11/1984	Application #:	06491282	Filing Dt:	05/03/1983
Title:	POPPET TYPE FLUID VALVE WITH REPLACEABLE WEAR SURFACE

Patent #:	4627519	Issue Dt:	12/09/1986	Application #:	06594795	Filing Dt:	03/29/1984
Title:	HYDRAULIC DISK BRAKE HAVING A BRAKING TORQUE-TO-HYDRAULIC FORCE CONVERTER

Patent #:	4601235	Issue Dt:	07/22/1986	Application #:	06621832	Filing Dt:	06/18/1984
Title:	RECIPROCATING PUMP PISTON

Patent #:	4585213	Issue Dt:	04/29/1986	Application #:	06638426	Filing Dt:	08/07/1984
Title:	WELL DERRICK

Patent #:	4653271	Issue Dt:	03/31/1987	Application #:	06655215	Filing Dt:	09/27/1984
Title:	BOOM CRANE CENTERING

Patent #:	4554947	Issue Dt:	11/26/1985	Application #:	06666186	Filing Dt:	10/29/1984
Title:	LOAD RECALL VALVE

Patent #:	4787524	Issue Dt:	11/29/1988	Application #:	06780007	Filing Dt:	09/25/1985
Title:	OVERLOAD PROTECTION SYSTEM FOR A CRANE

Patent #:	4651578	Issue Dt:	03/24/1987	Application #:	06864240	Filing Dt:	05/19/1986
Title:	WELL PUMPING UNIT

Patent #:	4667697	Issue Dt:	05/26/1987	Application #:	06875253	Filing Dt:	06/17/1986
Title:	UNITIZED CHECK VALVE

Patent #:	4703665	Issue Dt:	11/03/1987	Application #:	06921578	Filing Dt:	10/22/1986
Title:	WELL PUMPING UNIT

Patent #:	4716961	Issue Dt:	01/05/1988	Application #:	07011576	Filing Dt:	02/06/1987
Title:	ROTARY DRIVE APPARATUS FOR DOWNHOLE PUMP

Patent #:	4822556	Issue Dt:	04/18/1989	Application #:	07019448	Filing Dt:	02/26/1987
Title:	AUSTENITIC STAINLESS STEEL COMBINING STRENGTH AND RESISTANCE TO INTERGRANULAR CORROSION

Patent #:	4732061	Issue Dt:	03/22/1988	Application #:	07023384	Filing Dt:	03/09/1987
Title:	POWER TONGS AND CLAMPING UNITS THEREFOR

Patent #:	4843945	Issue Dt:	07/04/1989	Application #:	07023385	Filing Dt:	03/09/1987
Title:	APPARATUS FOR MAKING AND BREAKING THREADED WELL PIPE CONNECTIONS

Patent #:	4782662	Issue Dt:	11/08/1988	Application #:	07032180	Filing Dt:	03/30/1987
Title:	BOOM CRANE CENTERING

Patent #:	4781359	Issue Dt:	11/01/1988	Application #:	07100158	Filing Dt:	09/23/1987
Title:	SUB ASSEMBLY FOR A SWIVEL

Patent #:	4813498	Issue Dt:	03/21/1989	Application #:	07163580	Filing Dt:	03/03/1988
Title:	ACTIVE COUNTERBALANCE FOR A POWER SWIVEL DURING WELL DRILLING

Patent #:	4877093	Issue Dt:	10/31/1989	Application #:	07163583	Filing Dt:	03/03/1988
Title:	SPRING ACTUATED POWER SWIVEL SUPPORT ROLLERS

Patent #:	4809792	Issue Dt:	03/07/1989	Application #:	07163584	Filing Dt:	03/03/1988
Title:	SUPPORT SYSTEM FOR A TOP DRIVEN DRILLING UNIT

Patent #:	4928726	Issue Dt:	05/29/1990	Application #:	07212936	Filing Dt:	06/29/1988
Title:	CROSSARM VALVE SEAT WITH PULLING LEDGE

Patent #:	4922957	Issue Dt:	05/08/1990	Application #:	07321157	Filing Dt:	03/08/1989
Title:	VALVE WITH REPLACEABLE SEAL ELEMENT

Patent #:	4951707	Issue Dt:	08/28/1990	Application #:	07335725	Filing Dt:	04/10/1989
Title:	SEAL FOR A PUMP VALVE

Patent #:	4981180	Issue Dt:	01/01/1991	Application #:	07379765	Filing Dt:	07/14/1989
Title:	POSITIVE LOCK OF A DRIVE ASSEMBLY

Patent #:	5051007	Issue Dt:	09/24/1991	Application #:	07415841	Filing Dt:	10/02/1989
Title:	LUBRICATION OF A CENTRIFUGAL PUMP BEARING

Patent #:	5038871	Issue Dt:	08/13/1991	Application #:	07538634	Filing Dt:	06/13/1990
Title:	APPARATUS FOR SUPPORTING A DIRECT DRIVE DRILLING UNIT IN A POSITION OFFSET FROM THE CENTERLINE OF A WELL

Assignor

NATIONAL-OILWELL

Exec Dt:

01/16/1996

Assignee

CITICORP USA, INC., AS COLLATERAL AGENT

399 PARK AVENUE

NEW YORK, NEW YORK 10153

Correspondence name and address
	FEDERAL RESEARCH CORPORATION
	400 SEVENTH STREET, N.W.
	SUITE 101
	WASHINGTON, D.C. 20004

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