Granted Patent
Utility
US 4,277,692 · App. 06/045,573
Continuous power source with bi-directional converter
Inventor:
Kenneth T. Small
Patented Case
View Patent ↗
Granted: Jul 7, 1981
Filed: Jun 4, 1979
Inventor
Kenneth T. Small
Assignee (at issue)
TAB Products 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.