US Patent 8672049 Vibration drill unit
Patent 8672049 was granted and assigned to Hitachi on March, 2014 by the United States Patent and Trademark Office.
Is a
Current Assignee
Date Filed
July 6, 2006
Date of Patent
March 18, 2014
Patent Application Number
11480974
Patent Citations Received
Patent Jurisdiction
Patent Number
Patent Primary Examiner
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