Granted Patent
Utility
US 6,067,485 · App. 09/034,592
Method of controlling 20 pipe pressure
Inventors:
Gregory S. Balukin, Paul J. Kettle, Jr., David J. Pcsolar
Patented Case
View Patent ↗
Granted: May 23, 2000
Filed: Mar 4, 1998
Inventors
Gregory S. Balukin
Paul J. Kettle, Jr.
David J. Pcsolar
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.