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Ahigang Fang
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Salt Lake City, UT, US
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last 30 patents
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Patent Grant
Drill bit with cutting elements having functionally engineered wear...
Patent number
8,397,841
Issue date
Mar 19, 2013
Smith International, Inc.
Anthony Griffo
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...