Granted Patent
Utility
US 4,468,540 · App. 06/450,407
Wireless telephone system with combination filter/oscillator circuit
Inventor:
Peter K. Cripps
Patented Case
View Patent ↗
Granted: Aug 28, 1984
Filed: Dec 16, 1982
Inventor
Peter K. Cripps
Assignee (at issue)
GTE Automatic Electric Incorporated
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.