US Patent 8672042 Continuous fluid circulation valve for well drilling
Patent 8672042 was granted and assigned to Tiw Corporation on March, 2014 by the United States Patent and Trademark Office.
Is a
Current Assignee
Date Filed
May 5, 2011
0
Date of Patent
March 18, 2014
0
Patent Application Number
13101242
0
Patent Inventor Names
Britt O. Braddick
0
Patent Jurisdiction
Patent Number
Patent Primary Examiner
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