Granted Patent
Utility
US 5,788,338 · App. 08/677,584
Train brake pipe remote pressure control system and motor-driven regulating valve therefor
Inventors:
James E. Hart, Gary M. Sich
Patented Case
View Patent ↗
Granted: Aug 4, 1998
Filed: Jul 9, 1996
Inventors
James E. Hart
Gary M. Sich
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.