Granted Patent
Utility
US 5,790,527 · App. 08/359,691
Trunked radio frequency communication system for accommodating both frequency and time division based RF communications
Inventors:
William Oscar Janky, Philip C. Gulliford, Clayton F. Helvey, Satish Kappagantula, Ross W. Lampe, Anthony B. Waldroup
Patented Case
View Patent ↗
Granted: Aug 4, 1998
Filed: Dec 20, 1994
Inventors
William Oscar Janky
Philip C. Gulliford
Clayton F. Helvey
Satish Kappagantula
Ross W. Lampe
Anthony B. Waldroup
Assignee (at issue)
Research Triangle Park
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.