IP Library › Granted Patent US 5,286,069
Granted Patent Utility
US 5,286,069 · App. 07/985,832

Stress relief groove for drill pipe

Inventor: Gerald E. Wilson
Patented Case View Patent ↗
Granted: Feb 15, 1994 Filed: Dec 3, 1992
Inventor
Gerald E. Wilson
Assignee (at issue)
Prideco, Inc.

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Quick Facts
Patent No.
US 5,286,069
App. No.
07/985,832
Filed
1992-12-03
Granted
1994-02-15
Kind
A