Granted Patent
Utility
US 5,087,975 · App. 07/611,236
VSB HDTV transmission system with reduced NTSC co-channel interference
Inventors:
Richard W. Citta, Dennis M. Mutzabaugh, Gary J. Sgrignoli
Patented Case
View Patent ↗
Granted: Feb 11, 1992
Filed: Nov 9, 1990
Inventors
Richard W. Citta
Dennis M. Mutzabaugh
Gary J. Sgrignoli
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.