Granted Patent
Utility
US 5,097,973 · App. 07/673,344
Railcar articulated connector and wedge shim therefore
Inventor:
Charles P. Spencer
Patented Case
View Patent ↗
Granted: Mar 24, 1992
Filed: Mar 22, 1991
Inventor
Charles P. Spencer
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.