IP Library › Granted Patent US 4,712,621
Granted Patent Utility
US 4,712,621 · App. 06/943,278

Casing hanger running tool

Inventors: William David Wightman, Wilson L. Strahan
Patented Case View Patent ↗
Granted: Dec 15, 1987 Filed: Dec 17, 1986
Inventors
William David Wightman
Wilson L. Strahan
Assignee (at issue)
Hughes Tool Company LLC

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Quick Facts
Patent No.
US 4,712,621
App. No.
06/943,278
Filed
1986-12-17
Granted
1987-12-15
Kind
A