IP Library › Granted Patent US 4,161,321
Granted Patent Utility
US 4,161,321 · App. 05/872,157

Piston ring and method of manufacture

Inventors: John L. Hendrixon, Robert R. Rositch
Patented Case View Patent ↗
Granted: Jul 17, 1979 Filed: Jan 25, 1978
Inventors
John L. Hendrixon
Robert R. Rositch
Assignee (at issue)
Sealed Power Corporation

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Quick Facts
Patent No.
US 4,161,321
App. No.
05/872,157
Filed
1978-01-25
Granted
1979-07-17
Kind
A