Granted Patent
Utility
US 5,131,713 · App. 07/726,125
Vehicle for a freight transportation system
Inventor:
David N. Ferrence
Patented Case
View Patent ↗
Granted: Jul 21, 1992
Filed: Jul 3, 1991
Inventor
David N. Ferrence
Assignee (at issue)
UTDC 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.