Granted Patent
Utility
US 4,870,914 · App. 07/146,379
Diagonally braced railway truck
Inventor:
Robert P. Radwill
Patented Case
View Patent ↗
Granted: Oct 3, 1989
Filed: Jan 22, 1988
Inventor
Robert P. Radwill
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.