Granted Patent
Utility
US 4,766,497 · App. 07/046,962
IF circuit with reduced sound attenuation for cable signals
Inventors:
Frank G. Banach, James G. Haerle, David S. Tait
Patented Case
View Patent ↗
Granted: Aug 23, 1988
Filed: May 6, 1987
Inventors
Frank G. Banach
James G. Haerle
David S. Tait
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.