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Arifin Purwanto
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Kingwood, TX, US
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last 30 patents
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Patent Grant
Borehole drilling optimization with multiple cutting structures
Patent number
8,799,198
Issue date
Aug 5, 2014
Smith International, Inc.
Arifin Purwanto
E21 - EARTH DRILLING MINING
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last 30 patents
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Patent Application
Borehole Drilling Optimization With Multiple Cutting Structures
Publication number
20110232968
Publication date
Sep 29, 2011
Smith International, Inc.
Arifin Purwanto
E21 - EARTH DRILLING MINING