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Benjamin R. Orr
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Midlothian, TX, US
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last 30 patents
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Patent Grant
Apparatus and method for compensating for pressure changes within a...
Patent number
8,347,969
Issue date
Jan 8, 2013
Baker Hughes Incorporated
Benjamin R. Orr
E21 - EARTH DRILLING MINING
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last 30 patents
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Patent Application
Apparatus and method for compensating for pressure changes within a...
Publication number
20120090852
Publication date
Apr 19, 2012
Benjamin R. Orr
E21 - EARTH DRILLING MINING