US Patent 9163479 Flapper operating system without a flow tube
Patent 9163479 was granted and assigned to Baker Hughes on October, 2015 by the United States Patent and Trademark Office.
Is a
Current Assignee
Date Filed
August 3, 2007
0
Date of Patent
October 20, 2015
0
Patent Application Number
11833316
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Patent Citations Received
Patent Jurisdiction
Patent Number
Patent Primary Examiner
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