Granted Patent
Utility
US 4,980,924 · App. 07/220,211
HF radio communication systems with frequency management
Inventors:
Allyson P. C. Reed, Robert J. Goodwin, Ernest T. Clarke, David Williams
Patented Case
View Patent ↗
Granted: Dec 25, 1990
Filed: Sep 19, 1988
Inventors
Allyson P. C. Reed
Robert J. Goodwin
Ernest T. Clarke
David Williams
Assignee (at issue)
Plessey Overseas Limited
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.