IP Library › Granted Patent US 4,771,832
Granted Patent Utility
US 4,771,832 · App. 07/130,757

Wellhead with eccentric casing seal ring

Inventor: Charles D. Bridges
Patented Case View Patent ↗
Granted: Sep 20, 1988 Filed: Dec 9, 1987
Inventor
Charles D. Bridges
Assignee (at issue)
Vetco Gray, LLC

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Quick Facts
Patent No.
US 4,771,832
App. No.
07/130,757
Filed
1987-12-09
Granted
1988-09-20
Kind
A