Granted Patent
Utility
US 4,994,686 · App. 07/302,840
Audio frequency cable with reduced high frequency components
Inventor:
Bruce A. Brisson
Patented Case
View Patent ↗
Granted: Feb 19, 1991
Filed: Jan 27, 1989
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.