Granted Patent
Utility
US 4,473,774 · App. 06/347,108
CRT with internal neck coating for suppressing arcing therein
Inventor:
Karl G. Hernqvist
Patented Case
View Patent ↗
Granted: Sep 25, 1984
Filed: Feb 9, 1982
Inventor
Karl G. Hernqvist
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.