Granted Patent
Utility
US 4,660,085 · App. 06/780,015
Television receiver responsive to plural video signals
Inventors:
Leopold A. Harwood, Paul D. Filliman, Ronald Keen
Patented Case
View Patent ↗
Granted: Apr 21, 1987
Filed: Sep 25, 1985
Inventors
Leopold A. Harwood
Paul D. Filliman
Ronald Keen
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.