IP Library › Granted Patent US 4,638,237
Granted Patent Utility
US 4,638,237 · App. 06/688,327

Battery condition indicator

Inventor: Emilio A. Fernandez
Patented Case View Patent ↗
Granted: Jan 20, 1987 Filed: Jan 3, 1985
Inventor
Emilio A. Fernandez
Assignee (at issue)
PULSE ELECTRONICS, INC.

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Quick Facts
Patent No.
US 4,638,237
App. No.
06/688,327
Filed
1985-01-03
Granted
1987-01-20
Kind
A