US Patent D640291 Conical cutting element
Patent D640291 was granted and assigned to The Charles Machine Works Inc. on June, 2011 by the United States Patent and Trademark Office.
Is a
Current Assignee
Date Filed
October 11, 2010
Date of Patent
June 21, 2011
Patent Application Number
29376708
Patent Citations Received
Patent Inventor Names
Michael C. Walgren
0
Vernon T. Stellman
0
L. Shane Ingram
0
Patent Jurisdiction
Patent Number
Patent Primary Examiner
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