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APPARATUS AND METHODS FOR DRILLING AND LINING A WELLBORE

12/170,880 | U.S. Patent Application

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Location ELECTRONIC
Filed July 10, 2008
Examiner BRAD HARCOURT
Class 166
Art Group 3676
Patent No. 7,823,659
Case Type Utility - 166/380000
Status Patented Case
Parent 11/838,782 Abandoned
Parent 60/948,890 Expired
Last Updated: 3 years, 6 months ago
Date # Transaction