Granted Patent
Utility
US 4,243,912 · App. 06/070,538
Simplified resistive lens electron gun with compound linear voltage profile
Inventors:
David P. Bortfeld, Leon J. Vieland
Patented Case
View Patent ↗
Granted: Jan 6, 1981
Filed: Aug 28, 1979
Inventors
David P. Bortfeld
Leon J. Vieland
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.