Granted Patent
Utility
US 4,404,593 · App. 06/296,863
Brightness control circuit
Inventors:
Robert L. Shanley, II, Leopold A. Harwood
Patented Case
View Patent ↗
Granted: Sep 13, 1983
Filed: Aug 27, 1981
Inventors
Robert L. Shanley, II
Leopold A. Harwood
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.