Granted Patent
Utility
US 4,405,948 · App. 06/342,896
Volume control signal coupling circuit in an audio signal processing system
Inventor:
Patrick D. Griffis
Patented Case
View Patent ↗
Granted: Sep 20, 1983
Filed: Jan 26, 1982
Inventor
Patrick D. Griffis
Assignee (at issue)
RCA 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.