Granted Patent
Utility
US 6,816,009 · App. 10/199,623
Circuit and method for a transimpedance audio amplifier providing variable gain while maintaining load impedance
Inventors:
William E. Hughes, Richard W. Faith
Patented Case
View Patent ↗
Granted: Nov 9, 2004
Filed: Jul 19, 2002
Inventors
William E. Hughes
Richard W. Faith
Assignee (at issue)
Fender Musical Instruments Corporation
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.