Granted Patent
Utility
US 4,385,348 · App. 06/292,824
Inverter with improved power factor control
Inventor:
Gary E. Wisner
Patented Case
View Patent ↗
Granted: May 24, 1983
Filed: Aug 14, 1981
Inventor
Gary E. Wisner
Assignee (at issue)
Park-Ohio Industries
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.