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W-N APACHE CORPORATION
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WICHITA FALLS, TX, US
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Patents Grants
last 30 patents
Information
Patent Grant
Apparatus for gripping a down hole tubular for support and rotation
Patent number
5,297,833
Issue date
Mar 29, 1994
W-N Apache Corporation
Clyde A. Willis
E21 - EARTH DRILLING MINING
Information
Patent Grant
Automatic sequencing system for earth drilling machine
Patent number
5,294,228
Issue date
Mar 15, 1994
W-N Apache Corporation
Clyde A. Willis
E21 - EARTH DRILLING MINING
Information
Patent Grant
Lifting device for down hole tubulars
Patent number
5,273,388
Issue date
Dec 28, 1993
W-N Apache Corporation
Clyde A. Willis
E21 - EARTH DRILLING MINING
Information
Patent Grant
Feeding device for down hole tubulars
Patent number
5,259,723
Issue date
Nov 9, 1993
W-N Apache Corporation
Clyde A. Willis
B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information
Patent Grant
Centering spinning for down hole tubulars
Patent number
5,054,550
Issue date
Oct 8, 1991
W-N Apache Corporation
Lee R. Hodge
E21 - EARTH DRILLING MINING
Information
Patent Grant
Apparatus for gripping a down hole tubular for rotation
Patent number
5,036,927
Issue date
Aug 6, 1991
W-N Apache Corporation
Clyde A. Willis
E21 - EARTH DRILLING MINING
Information
Patent Grant
Compact casing tongs for use on top head drive earth drilling machine
Patent number
4,867,236
Issue date
Sep 19, 1989
W-N Apache Corporation
Keith M. Haney
A41 - WEARING APPAREL
Information
Patent Grant
Line reeving system for earth drilling machine
Patent number
4,842,250
Issue date
Jun 27, 1989
W-N Apache Corporation
Clyde A. Willis
E21 - EARTH DRILLING MINING
Information
Patent Grant
Top head drive cooling system
Patent number
4,830,119
Issue date
May 16, 1989
501 W-N Apache Corporation
Keith M. Haney
E21 - EARTH DRILLING MINING
Information
Patent Grant
Method of assembling a modular drilling machine
Patent number
4,821,816
Issue date
Apr 18, 1989
W-N Apache Corporation
Clyde A. Willis
E21 - EARTH DRILLING MINING
Information
Patent Grant
Top head drive assembly for earth drilling machine and components t...
Patent number
4,821,814
Issue date
Apr 18, 1989
501 W-N Apache Corporation
Clyde A. Willis
E21 - EARTH DRILLING MINING
Information
Patent Grant
Top head drive assembly with axially movable quill
Patent number
4,815,546
Issue date
Mar 28, 1989
W-N Apache Corporation
Keith M. Haney
E21 - EARTH DRILLING MINING
Information
Patent Grant
Internal wrench for a top head drive assembly
Patent number
4,762,187
Issue date
Aug 9, 1988
W-N Apache Corporation
Keith M. Haney
E21 - EARTH DRILLING MINING
Information
Patent Grant
Modular drilling machine and components thereof
Patent number
4,759,414
Issue date
Jul 26, 1988
W-N Apache Corporation
Clyde A. Willis
E21 - EARTH DRILLING MINING
Information
Patent Grant
Method of positioning a transfer arm
Patent number
4,708,581
Issue date
Nov 24, 1987
W-N Apache Corporation
Harold L. Adair
E21 - EARTH DRILLING MINING
Information
Patent Grant
Automatic pipe elevator
Patent number
4,650,236
Issue date
Mar 17, 1987
W-N Apache Corporation
Keith M. Haney
B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Patents Applications
last 30 patents
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