Granted Patent
Utility
US 6,340,139 · App. 09/584,865
Highway grade crossing vehicle violation detector
Inventor:
Thomas N. Hilleary
Patented Case
View Patent ↗
Granted: Jan 22, 2002
Filed: Jun 1, 2000
Inventor
Thomas N. Hilleary
Assignee (at issue)
LaBarge, 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.