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Charles C. Jonhson
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League City, TX, US
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last 30 patents
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Patent Grant
Pressure actuated ported sub for subterranean cement completions
Patent number
8,555,960
Issue date
Oct 15, 2013
Baker Hughes Incorporated
Jason C. Mailand
E21 - EARTH DRILLING MINING
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last 30 patents
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Patent Application
Pressure Actuated Ported Sub for Subterranean Cement Completions
Publication number
20130025872
Publication date
Jan 31, 2013
BAKER HUGHES INCORPORATED
Jason C. Mailand
E21 - EARTH DRILLING MINING