Granted Patent
Utility
US 4,249,223 · App. 05/965,558
High voltage DC contactor with solid state arc quenching
Inventors:
Kenneth C. Shuey, Donal E. Baker, Charles L. Doughman
Patented Case
View Patent ↗
Granted: Feb 3, 1981
Filed: Dec 1, 1978
Inventors
Kenneth C. Shuey
Donal E. Baker
Charles L. Doughman
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.