US Patent 9004194 Downhole tractor
Patent 9004194 was granted and assigned to National Oilwell Varco on April, 2015 by the United States Patent and Trademark Office.
Is a
Current Assignee
Date Filed
November 10, 2010
0
Date of Patent
April 14, 2015
0
Patent Application Number
13508982
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Patent Inventor Names
Alan Martyn Eddison
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David Anderson Coull
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Derek James Stuart
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Patent Jurisdiction
Patent Number
Patent Primary Examiner
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