Granted Patent
Utility
US 5,503,467 · App. 08/448,144
Pneumatic emergency backup for electro-pneumatic freight brake
Inventor:
Edward W. Gaughan
Patented Case
View Patent ↗
Granted: Apr 2, 1996
Filed: May 23, 1995
Inventor
Edward W. Gaughan
Assignee (at issue)
Westinghouse Air Brake Co.
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.