IP Library › Granted Patent US 4,291,244
Granted Patent Utility
US 4,291,244 · App. 06/072,302

Electrets

Inventors: William F. Beach, Dennis Michael Mahoney
Patented Case View Patent ↗
Granted: Sep 22, 1981 Filed: Sep 4, 1979
Inventors
William F. Beach
Dennis Michael Mahoney
Assignee (at issue)
Union Carbide Corporation

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Quick Facts
Patent No.
US 4,291,244
App. No.
06/072,302
Filed
1979-09-04
Granted
1981-09-22
Kind
A