Granted Patent
Utility
US 4,979,230 · App. 07/445,970
Up-conversion homodyne receiver for cable television converter with frequency offset to avoid adjacent channel interference
Inventor:
Daniel Marz
Patented Case
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Granted: Dec 18, 1990
Filed: Dec 4, 1989
Inventor
Daniel Marz
Assignee (at issue)
General Instrument 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.