Granted Patent
Utility
US 5,255,324 · App. 07/633,919
Digitally controlled audio amplifier with voltage limiting
Inventors:
James E. Brewer, Peter Abowd, Frank W. Raffaeli
Patented Case
View Patent ↗
Granted: Oct 19, 1993
Filed: Dec 26, 1990
Inventors
James E. Brewer
Peter Abowd
Frank W. Raffaeli
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.