Granted Patent
Utility
US 4,953,471 · App. 07/389,410
Friction shoe assembly for repair of worn railway truck
Inventors:
Robert D. Wronkiewicz, Charles Moehling
Patented Case
View Patent ↗
Granted: Sep 4, 1990
Filed: Aug 4, 1989
Inventors
Robert D. Wronkiewicz
Charles Moehling
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.