Granted Patent
Utility
US 5,486,820 · App. 07/992,577
Traffic sensor having piezoelectric sensors which distinguish lanes
Inventors:
Joseph V. Chatigny, Mitchell L. Thompson, Peter F. Radice, Donald Halvorsen
Patented Case
View Patent ↗
Granted: Jan 23, 1996
Filed: Dec 18, 1992
Inventors
Joseph V. Chatigny
Mitchell L. Thompson
Peter F. Radice
Donald Halvorsen
Assignee (at issue)
Whitaker & Company
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.