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METHOD AND APPARATUS FOR DRILLING WITH CASING

10/794,797 | U.S. Patent Application

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Location ELECTRONIC
Filed March 5, 2004
Examiner ZAKIYA W BATES
Class 166
Art Group 3676
Patent No. 7,140,445
Case Type Utility - 166/380000
Status Patented Case
Parent 60/452,318 Expired
Parent 60/451,965 Expired
Parent 10/382,353 Patented
Parent 09/486,901 Patented
Parent PCT/GB98/02582 -
Parent 10/625,840 Patented
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Last Updated: 5 years, 12 months ago
Date # Transaction