Granted Patent
Utility
US 4,379,816 · App. 06/313,312
Indicator of full charge for secondary cell or battery thereof
Inventors:
Ferdinand H. Mullersman, Charles R. Blake
Patented Case
View Patent ↗
Granted: Apr 12, 1983
Filed: Oct 20, 1981
Inventors
Ferdinand H. Mullersman
Charles R. Blake
Assignee (at issue)
General Electric Company
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.