Granted Patent
Utility
US 5,746,136 · App. 08/713,987
Dynamically stable, lightweight railcar support system
Inventors:
Vaughn Terrey Hawthorne, Charles P. Spencer, Terry L. Pitchford
Patented Case
View Patent ↗
Granted: May 5, 1998
Filed: Sep 13, 1996
Inventors
Vaughn Terrey Hawthorne
Charles P. Spencer
Terry L. Pitchford
Assignee (at issue)
AMSTED INDUSTRIES INCORPORATED
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.