Granted Patent
Utility
US 4,219,778 · App. 06/014,013
Signal processing circuit for an FM signal receiver
Inventor:
Eiichi Ishii
Patented Case
View Patent ↗
Granted: Aug 26, 1980
Filed: Feb 21, 1979
Inventor
Eiichi Ishii
Assignee (at issue)
NIPPON ELECTRIC CO., LTD.
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.