Granted Patent
Utility
US 4,370,592 · App. 06/201,692
Color picture tube having an improved inline electron gun with an expanded focus lens
Inventors:
Richard H. Hughes, Bruce G. Marks
Patented Case
View Patent ↗
Granted: Jan 25, 1983
Filed: Oct 29, 1980
Inventors
Richard H. Hughes
Bruce G. Marks
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.