Granted Patent
Utility
US 4,766,819 · App. 07/031,102
Saddle frame for passive steering single-axle truck for a railway freight car
Inventor:
Hans B. Weber
Patented Case
View Patent ↗
Granted: Aug 30, 1988
Filed: Mar 26, 1987
Inventor
Hans B. Weber
Assignee (at issue)
National Casting 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.