Granted Patent
Utility
US 5,509,727 · App. 08/396,815
Ralway automatic brake control valve test unit
Inventors:
James E. Hart, Edward W. Gaughan, Jeffrey D. Reid, Vincent F. Troiani
Patented Case
View Patent ↗
Granted: Apr 23, 1996
Filed: Mar 2, 1995
Inventors
James E. Hart
Edward W. Gaughan
Jeffrey D. Reid
Vincent F. Troiani
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.