Granted Patent
Utility
US 4,745,331 · App. 07/075,783
Color picture tube having an inline electron gun with an einzel lens
Inventor:
Roger C. Alig
Patented Case
View Patent ↗
Granted: May 17, 1988
Filed: Jul 20, 1987
Inventor
Roger C. Alig
Assignee (at issue)
RCA Licensing 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.