Granted Patent
Utility
US 4,406,639 · App. 06/306,713
Wet processing of electrodes of a CRT to suppress afterglow
Inventor:
Robert Williams
Patented Case
View Patent ↗
Granted: Sep 27, 1983
Filed: Sep 29, 1981
Inventor
Robert Williams
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.