Granted Patent
Utility
US 4,538,023 · App. 06/567,080
Audio signal cable
Inventor:
Bruce A. Brisson
Patented Case
View Patent ↗
Granted: Aug 27, 1985
Filed: Dec 30, 1983
Inventor
Bruce A. Brisson
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.