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Kenneth R. Stamper
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Bartlesville, OK, US
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last 30 patents
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Patent Grant
Liquid level detection
Patent number
5,094,102
Issue date
Mar 10, 1992
Phillips Petroleum Company
Clayton D. Fryer
E21 - EARTH DRILLING MINING
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Patent Grant
Liquid level detection
Patent number
4,972,705
Issue date
Nov 27, 1990
Phillips Petroleum Company
Clayton D. Fryer
E21 - EARTH DRILLING MINING