Granted Patent
Utility
US 4,308,486 · App. 06/098,171
Line cathode structure having recessed geometry
Inventor:
Robert A. Gange
Patented Case
View Patent ↗
Granted: Dec 29, 1981
Filed: Nov 27, 1979
Inventor
Robert A. Gange
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.