Granted Patent
Utility
US 4,346,375 · App. 06/181,568
Solid state status indication circuit for power controllers
Inventor:
William W. Billings
Patented Case
View Patent ↗
Granted: Aug 24, 1982
Filed: Aug 27, 1980
Inventor
William W. Billings
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.