Granted Patent
Utility
US 4,623,949 · App. 06/773,473
Bus differential relay
Inventors:
Seymour Salowe, Robert T. Elms, Richard A. Johnson
Patented Case
View Patent ↗
Granted: Nov 18, 1986
Filed: Sep 6, 1985
Inventors
Seymour Salowe
Robert T. Elms
Richard A. Johnson
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.