Granted Patent
Utility
US 4,644,440 · App. 06/689,691
Redundant power supply arrangement with surge protection
Inventors:
Thomas J. Kenny, James F. Sutherland
Patented Case
View Patent ↗
Granted: Feb 17, 1987
Filed: Jan 8, 1985
Inventors
Thomas J. Kenny
James F. Sutherland
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.