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Ehren Long
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Ponca City, OK, US
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last 30 patents
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Patent Grant
Feature to eliminate shale packing/shale evacuation channel
Patent number
9,617,794
Issue date
Apr 11, 2017
Smith International, Inc.
Bala Durairajan
E21 - EARTH DRILLING MINING
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last 30 patents
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Patent Application
FEATURE TO ELIMINATE SHALE PACKING/SHALE EVACUATION CHANNEL
Publication number
20130341101
Publication date
Dec 26, 2013
Smith International, Inc.
Bala Durairajan
E21 - EARTH DRILLING MINING