US Patent 8770274 Shear seal blowout preventer
Patent 8770274 was granted and assigned to National Oilwell Varco on July, 2014 by the United States Patent and Trademark Office.
Is a
Current Assignee
Date Filed
July 11, 2013
0
Date of Patent
July 8, 2014
0
Patent Applicant
Patent Application Number
13939598
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Patent Citations Received
Patent Inventor Names
Denzal Wayne Van Winkle
0
Patent Jurisdiction
Patent Number
Patent Primary Examiner
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