Granted Patent
Utility
US 4,247,822 · App. 06/000,812
Frequency translation means
Inventor:
Markus Nowogrodzki
Patented Case
View Patent ↗
Granted: Jan 27, 1981
Filed: Jan 4, 1979
Inventor
Markus Nowogrodzki
Assignee (at issue)
RCA 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.