Granted Patent
Utility
US 5,719,902 · App. 08/424,706
Methods and apparatus for detecting cellular digital packet data (CDPD)
Inventors:
R. Franklin Quick, Kumar Balachandran, Keith Smith
Patented Case
View Patent ↗
Granted: Feb 17, 1998
Filed: Apr 18, 1995
Inventors
R. Franklin Quick
Kumar Balachandran
Keith Smith
Assignee (at issue)
Pacific Communication Sciences, Inc.
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.