Granted Patent
Utility
US 4,484,222 · App. 06/437,934
Intermediate frequency circuit with solid state trap
Inventor:
Frank G. Banach
Patented Case
View Patent ↗
Granted: Nov 20, 1984
Filed: Nov 1, 1982
Inventor
Frank G. Banach
Assignee (at issue)
Zenith Electronics LLC
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.