Granted Patent
Utility
US 5,673,774 · App. 08/506,691
Auxiliary vehicle current collector
Inventors:
Scott M. Trapp, Michael Weiss
Patented Case
View Patent ↗
Granted: Oct 7, 1997
Filed: Jul 25, 1995
Inventors
Scott M. Trapp
Michael Weiss
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.