Granted Patent
Utility
US 4,491,075 · App. 06/378,202
Snubbed railway car truck
Inventor:
Otto W. Neumann
Patented Case
View Patent ↗
Granted: Jan 1, 1985
Filed: May 14, 1982
Inventor
Otto W. Neumann
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.