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.

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Patent

Patent attributes

Patent Applicant

National Oilwell Varco

Current Assignee

National Oilwell Varco

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

87702740

Patent Inventor Names

Denzal Wayne Van Winkle0

Date of Patent

July 8, 2014

Patent Application Number

139395980

Date Filed

July 11, 2013

Patent Citations Received

‌

US Patent 12006781 Blowout preventer with multiple application ram blades

Patent Primary Examiner

‌

David Andrews

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