Granted Patent
Utility
US 4,525,740 · App. 06/381,110
TV Receiver with multiplexed microprocessor keyboard scanning and channel number display
Inventor:
Arthur N. Borg
Patented Case
View Patent ↗
Granted: Jun 25, 1985
Filed: May 24, 1982
Inventor
Arthur N. Borg
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.