Granted Patent
Utility
US 4,620,764 · App. 06/753,927
Pin biasing base for electron tubes
Inventor:
Myron H. Wardell, Jr.
Patented Case
View Patent ↗
Granted: Nov 4, 1986
Filed: Jul 11, 1985
Inventor
Myron H. Wardell, Jr.
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.