Granted Patent
Utility
US 5,208,865 · App. 07/812,337
Muting circuit using common mode rejection of differential amplifier
Inventors:
James W. Friske, Andrew C. Krochmal
Patented Case
View Patent ↗
Granted: May 4, 1993
Filed: Dec 23, 1991
Inventors
James W. Friske
Andrew C. Krochmal
Assignee (at issue)
Ford Motor Company
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.