Granted Patent
Utility
US 4,794,342 · App. 07/057,145
Intermediate frequency amplification circuit capable of detecting a field strength with low electric power
Inventor:
Katsuji Kimura
Patented Case
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Granted: Dec 27, 1988
Filed: Jun 3, 1987
Inventor
Katsuji Kimura
Assignee (at issue)
NEC 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.