Granted Patent
Utility
US 4,469,987 · App. 06/314,301
Means for enhancing brightness of a monochrome CRT without loss of resolution
Inventors:
Allen P. Blacker, Khem Garewal
Patented Case
View Patent ↗
Granted: Sep 4, 1984
Filed: Oct 23, 1981
Inventors
Allen P. Blacker
Khem Garewal
Assignee (at issue)
Zenith Electronics LLC
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.