Granted Patent
Utility
US 4,449,069 · App. 06/347,526
Color picture tube with focusing electrode having electrostatic field distortion aperture therein
Inventors:
Naim Z. Assil, Richard H. Hughes
Patented Case
View Patent ↗
Granted: May 15, 1984
Filed: Feb 10, 1982
Inventors
Naim Z. Assil
Richard H. Hughes
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.