Granted Patent
Utility
US 4,234,825 · App. 06/031,461
System for controlling brightness uniformity in display devices
Inventor:
Robert A. Gange
Patented Case
View Patent ↗
Granted: Nov 18, 1980
Filed: Apr 19, 1979
Inventor
Robert A. Gange
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.