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William H. Schock
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Lafayette, LA, US
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last 30 patents
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Patent Grant
Apparatus for retrieving whipstock
Patent number
5,535,822
Issue date
Jul 16, 1996
Enterra Corporation
William H. Schock
E21 - EARTH DRILLING MINING
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Patent Grant
Sealed bearing roller reamer
Patent number
5,381,868
Issue date
Jan 17, 1995
Triumph*LOR Inc
William H. Schock
E21 - EARTH DRILLING MINING
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Patent Grant
Bottom set, non-retrievable whipstock assembly
Patent number
5,361,833
Issue date
Nov 8, 1994
Triumph*LOR, Inc.
William H. Schock
E21 - EARTH DRILLING MINING