IP Library › Granted Patent US 4,867,149
Granted Patent Utility
US 4,867,149 · App. 07/285,339

Earplugs

Inventor: Robert N. Falco
Patented Case View Patent ↗
Granted: Sep 19, 1989 Filed: Dec 16, 1989
Inventor
Robert N. Falco
Assignee (at issue)
Cabot Corporation

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Quick Facts
Patent No.
US 4,867,149
App. No.
07/285,339
Filed
1989-12-16
Granted
1989-09-19
Kind
A