Granted Patent
Utility
US 4,051,521 · App. 05/728,171
Video amplifier for combining luminance and chrominance signals
Inventor:
Leopold A. Harwood
Patented Case
View Patent ↗
Granted: Sep 27, 1977
Filed: Sep 30, 1976
Inventor
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.