US Patent D656974 Drill bit
Patent D656974 was granted and assigned to Center Rock on April, 2012 by the United States Patent and Trademark Office.
Is a
Current Assignee
Date Filed
July 7, 2011
Date of Patent
April 3, 2012
Patent Application Number
29396799
Patent Citations Received
Patent Inventor Names
Leland H. Lyon
0
Warren Thomas Lay
0
Patent Jurisdiction
Patent Number
Patent Primary Examiner
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