Granted Patent
Utility
US 4,247,943 · App. 06/041,053
Piecewise coherent, combined frequency and phase-shift-keyed signal demodulator
Inventor:
Robert E. Malm
Patented Case
View Patent ↗
Granted: Jan 27, 1981
Filed: May 21, 1979
Inventor
Robert E. Malm
Assignee (at issue)
Northrop 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.