Granted Patent
Utility
US 4,554,501 · App. 06/604,690
Variable speed constant frequency power system with auxiliary DC output
Inventor:
Donal E. Baker
Patented Case
View Patent ↗
Granted: Nov 19, 1985
Filed: Apr 27, 1984
Inventor
Donal E. Baker
Assignee (at issue)
Westinghouse Electric Company LLC
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.