Granted Patent
Utility
US 6,449,486 · App. 09/318,678
Multiple location estimates in a cellular communication system
Inventor:
Padmanabha R. Rao
Patented Case
View Patent ↗
Granted: Sep 10, 2002
Filed: May 25, 1999
Inventor
Padmanabha R. Rao
Assignee (at issue)
Polaris Wireless, 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.