Granted Patent
Utility
US 4,293,818 · App. 06/005,060
Frequency modulation threshold extension demodulator utilizing frequency compression feedback with frequency drift correction
Inventor:
Harold F. Jarger
Patented Case
View Patent ↗
Granted: Oct 6, 1981
Filed: Jan 22, 1979
Inventor
Harold F. Jarger
Assignee (at issue)
International Telephone and Telegraph 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.