Granted Patent
Utility
US 4,558,186 · App. 06/529,414
Single power supply battery feed circuit
Inventor:
Douglas C. Stahl
Patented Case
View Patent ↗
Granted: Dec 10, 1985
Filed: Sep 6, 1983
Inventor
Douglas C. Stahl
Assignee (at issue)
GTE Automatic Electric Incorporated
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.