Granted Patent
Utility
US 5,889,477 · App. 08/823,610
Process and system for ascertaining traffic conditions using stationary data collection devices
Inventor:
Ulrich Fastenrath
Patented Case
View Patent ↗
Granted: Mar 30, 1999
Filed: Mar 25, 1997
Inventor
Ulrich Fastenrath
Assignee (at issue)
Mannesmann AG
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.