IP Library › Granted Patent US 4,219,721
Granted Patent Utility
US 4,219,721 · App. 05/936,082

Marking of lenses

Inventors: Melvin E. Kamen, Morris Bernfeld, John C. Pelc
Patented Case View Patent ↗
Granted: Aug 26, 1980 Filed: Aug 23, 1978
Inventors
Melvin E. Kamen
Morris Bernfeld
John C. Pelc
Assignee (at issue)
Revlon

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Quick Facts
Patent No.
US 4,219,721
App. No.
05/936,082
Filed
1978-08-23
Granted
1980-08-26
Kind
A