Granted Patent
Utility
US 4,303,972 · App. 06/095,820
Controlling the circulating current in naturally commutated static power converters
Inventors:
Eric J. Stacey, Donal E. Baker, Charles L. Doughman, Ralph D. Jessee
Patented Case
View Patent ↗
Granted: Dec 1, 1981
Filed: Nov 19, 1979
Inventors
Eric J. Stacey
Donal E. Baker
Charles L. Doughman
Ralph D. Jessee
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.