US Patent 7861808 Cutter for maintaining edge sharpness
Patent 7861808 was granted and assigned to Smith International on January, 2011 by the United States Patent and Trademark Office.
Is a
Current Assignee
Date Filed
March 1, 2006
0
Date of Patent
January 4, 2011
0
Patent Application Number
11365298
0
Patent Inventor Names
Yuelin Shen
0
Youhe Zhang
0
Patent Jurisdiction
Patent Number
Patent Primary Examiner
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