IP Library › Granted Patent US 4,667,697
Granted Patent Utility
US 4,667,697 · App. 06/875,253

Unitized check valve

Inventor: R. Crawford
Patented Case View Patent ↗
Granted: May 26, 1987 Filed: Jun 17, 1986
Inventor
R. Crawford
Assignee (at issue)
Armco Inc.

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Quick Facts
Patent No.
US 4,667,697
App. No.
06/875,253
Filed
1986-06-17
Granted
1987-05-26
Kind
A