Granted Patent
Utility
US 4,387,400 · App. 06/262,169
Tuning system for a television receiver
Inventor:
Arthur N. Borg
Patented Case
View Patent ↗
Granted: Jun 7, 1983
Filed: May 11, 1981
Inventor
Arthur N. Borg
Assignee (at issue)
Zenith Radio 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.