Granted Patent
Utility
US 5,887,953 · App. 08/789,754
Dual pneumatic trainline control unit
Inventors:
James A. Wood, Richard J. Mazur
Patented Case
View Patent ↗
Granted: Mar 30, 1999
Filed: Jan 28, 1997
Inventors
James A. Wood
Richard J. Mazur
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.