Granted Patent
Utility
US 6,810,321 · App. 10/390,307
Vehicle traffic monitoring using cellular telephone location and velocity data
Inventor:
Fred S. Cook
Patented Case
View Patent ↗
Granted: Oct 26, 2004
Filed: Mar 17, 2003
Inventor
Fred S. Cook
Assignee (at issue)
SPRINT COMMUNICATIONS COMPANY, L.P.
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.