Granted Patent
Utility
US 4,229,686 · App. 05/877,297
Battery charger adapter system
Inventors:
Ferdinand H. Mullersman, Billy E. Stillwell
Patented Case
View Patent ↗
Granted: Oct 21, 1980
Filed: Feb 13, 1978
Inventors
Ferdinand H. Mullersman
Billy E. Stillwell
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.