Granted Patent
Utility
US 4,441,137 · App. 06/412,899
High voltage protection for an output circuit
Inventor:
Leopold A. Harwood
Patented Case
View Patent ↗
Granted: Apr 3, 1984
Filed: Aug 30, 1982
Inventor
Leopold A. Harwood
Assignee (at issue)
RCA Corporation
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.