Granted Patent
Utility
US 4,580,277 · App. 06/588,601
Digital-based phase shift keying modulator
Inventors:
Paul Angello, George S. Des Brisay, Jr.
Patented Case
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Granted: Apr 1, 1986
Filed: Mar 12, 1984
Inventors
Paul Angello
George S. Des Brisay, Jr.
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.