Granted Patent
Utility
US 4,356,415 · App. 06/168,044
Frequency discriminator utilizing a transferred electron device
Inventor:
Fred Sterzer
Patented Case
View Patent ↗
Granted: Oct 26, 1982
Filed: Jul 14, 1980
Inventor
Fred Sterzer
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.