Granted Patent
Utility
US 4,063,128 · App. 05/702,010
Cathode support structure for color picture tube guns to equalize cutoff relation during warm-up
Inventor:
Richard H. Hughes
Patented Case
View Patent ↗
Granted: Dec 13, 1977
Filed: Jul 2, 1976
Inventor
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.