US Patent 9033069 High-shear roller cone and PDC hybrid bit
Patent 9033069 was granted and assigned to Smith International on May, 2015 by the United States Patent and Trademark Office.
Is a
Current Assignee
Date Filed
January 5, 2011
Date of Patent
May 19, 2015
Patent Application Number
12985054
Patent Citations Received
Patent Inventor Names
Zhehua Zhang
0
Patent Jurisdiction
Patent Number
Patent Primary Examiner
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