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Stanley W. Granger
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Diamond Bar, CA, US
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last 30 patents
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Patent Grant
Annular sealing element with self-pivoting inserts for blowout prev...
Patent number
5,116,017
Issue date
May 26, 1992
Stanley W. Granger
E21 - EARTH DRILLING MINING
Information
Patent Grant
Self-adjusting automatic locking piston for RAM blowout preventers
Patent number
5,056,418
Issue date
Oct 15, 1991
Stanley W. Granger
E21 - EARTH DRILLING MINING
Information
Patent Grant
Variable bore ram rubber with non-overlapping inserts
Patent number
5,044,603
Issue date
Sep 3, 1991
Stanley W. Granger
E21 - EARTH DRILLING MINING
Information
Patent Grant
Force-limiting/wear compensating annular sealing element for blowou...
Patent number
4,949,785
Issue date
Aug 21, 1990
Joseph O. Beard
E21 - EARTH DRILLING MINING
Information
Patent Grant
Variable bore ram rubber
Patent number
4,930,745
Issue date
Jun 5, 1990
Stanley W. Granger
E21 - EARTH DRILLING MINING
Information
Patent Grant
Blowout preventer with radial force limiter
Patent number
4,858,882
Issue date
Aug 22, 1989
Joseph O. Beard
E21 - EARTH DRILLING MINING
Information
Patent Grant
Variable ram seal for blowout preventers
Patent number
4,770,387
Issue date
Sep 13, 1988
NL Industries, Inc.
Stanley W. Granger
E21 - EARTH DRILLING MINING
Information
Patent Grant
Shear ram apparatus
Patent number
4,540,046
Issue date
Sep 10, 1985
NL Industries, Inc.
Stanley W. Granger
E21 - EARTH DRILLING MINING