IP Library › Granted Patent US 4,149,162
Granted Patent Utility
US 4,149,162 · App. 05/808,065

Battery discriminator circuit for smoke detectors

Inventors: Robert B. Enemark, Paul S. Richtarcsik
Patented Case View Patent ↗
Granted: Apr 10, 1979 Filed: Jun 20, 1977
Inventors
Robert B. Enemark
Paul S. Richtarcsik
Assignee (at issue)
American District Telegraph Company

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Quick Facts
Patent No.
US 4,149,162
App. No.
05/808,065
Filed
1977-06-20
Granted
1979-04-10
Kind
A