Granted Patent
Utility
US 4,688,252 · App. 06/811,035
IV SAP/stereo audio system
Inventors:
George T. Kufta, David S. Tait
Patented Case
View Patent ↗
Granted: Aug 18, 1987
Filed: Dec 19, 1985
Inventors
George T. Kufta
David S. Tait
Assignee (at issue)
Zenith Electronics LLC
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.