US Patent 7347459 Coupling for drilling-with-casing operations
Patent 7347459 was granted and assigned to Gb Tubulars on March, 2008 by the United States Patent and Trademark Office.
Is a
Current Assignee
Date Filed
April 29, 2005
0
Date of Patent
March 25, 2008
0
Patent Application Number
11117990
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Patent Inventor Names
Eugene J. Mannella
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George B. Geary
0
Patent Jurisdiction
Patent Number
Patent Primary Examiner
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