IP Library › Granted Patent US 4,491,331
Granted Patent Utility
US 4,491,331 · App. 06/578,985

Grooved mechanical face seal

Inventors: Richard F. Salant, Clinton Boyd
Patented Case View Patent ↗
Granted: Jan 1, 1985 Filed: Feb 13, 1984
Inventors
Richard F. Salant
Clinton Boyd
Assignee (at issue)
Hughes Tool Company LLC

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Quick Facts
Patent No.
US 4,491,331
App. No.
06/578,985
Filed
1984-02-13
Granted
1985-01-01
Kind
A