Granted Patent
Utility
US 4,680,749 · App. 06/734,369
Duplex radio transceiver having improved data/tone and audio modulation architecture
Inventors:
Arvid E. Englund, Jr., Stephen R. Wynn, Rodney A. Dolman, Frederick J. Highton, Rickey D. Harris
Patented Case
View Patent ↗
Granted: Jul 14, 1987
Filed: May 15, 1985
Inventors
Arvid E. Englund, Jr.
Stephen R. Wynn
Rodney A. Dolman
Frederick J. Highton
Rickey D. Harris
Assignee (at issue)
General Electric Company
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.