US Patent 7882930 Pump jack crank and method
Patent 7882930 was granted and assigned to Werner Co. on February, 2011 by the United States Patent and Trademark Office.
Is a
Current Assignee
Date Filed
May 5, 2005
Date of Patent
February 8, 2011
Patent Application Number
11122360
Patent Citations Received
Patent Jurisdiction
Patent Number
Patent Primary Examiner
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