Granted Patent
Utility
US 5,947,423 · App. 08/945,215
Vehicle control system
Inventors:
Ray Clifton, Steve Sadler, Ewan Dunlop
Patented Case
View Patent ↗
Granted: Sep 7, 1999
Filed: Dec 22, 1997
Inventors
Ray Clifton
Steve Sadler
Ewan Dunlop
Assignee (at issue)
Westinghouse Brake and Signal Holdings Limited
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.