Granted Patent
Utility
US 4,281,413 · App. 06/099,551
Multichannel radio telephone system
Inventor:
Robert T. Forrest
Patented Case
View Patent ↗
Granted: Jul 28, 1981
Filed: Dec 3, 1979
Inventor
Robert T. Forrest
Assignee (at issue)
General Electric Company
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.