US Patent 7647980 Drillstring packer assembly
Patent 7647980 was granted and assigned to Schlumberger on January, 2010 by the United States Patent and Trademark Office.
Is a
Current Assignee
Date Filed
May 29, 2007
Date of Patent
January 19, 2010
Patent Application Number
11754473
Patent Inventor Names
Alexander F. Zazovsky
0
Nicholas Ellson
0
Philippe Hocquet
0
Pierre-Yves Corre
0
Vladimir Vaynshteyn
0
Patent Jurisdiction
Patent Number
Patent Primary Examiner
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