Granted Patent
Utility
US 4,586,078 · App. 06/560,061
CATV upstream signal transmission at nonharmonic video frequencies
Inventors:
Richard W. Citta, Gary J. Sgrignoli, Dennis M. Mutzabaugh
Patented Case
View Patent ↗
Granted: Apr 29, 1986
Filed: Dec 9, 1983
Inventors
Richard W. Citta
Gary J. Sgrignoli
Dennis M. Mutzabaugh
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.