Granted Patent
Utility
US 5,752,190 · App. 08/099,503
Supervisory audio tone based carrier-to-interference measurement in a mobile cellular communication system
Inventors:
John Kaewell, David M. Cooley
Patented Case
View Patent ↗
Granted: May 12, 1998
Filed: Jul 30, 1993
Inventors
John Kaewell
David M. Cooley
Assignee (at issue)
HUGHES ELECTRONICS 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.