Granted Patent
Utility
US 4,246,653 · App. 06/001,485
In-phase quadrature demodulator for CPSK signals
Inventor:
Robert E. Malm
Patented Case
View Patent ↗
Granted: Jan 20, 1981
Filed: Jan 8, 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.