Granted Patent
Utility
US 5,821,879 · App. 08/691,957
Vehicle axle detector for roadways
Inventor:
Till W. Liepmann
Patented Case
View Patent ↗
Granted: Oct 13, 1998
Filed: Aug 5, 1996
Inventor
Till W. Liepmann
Assignee (at issue)
Pacific Sierra Research
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.