Granted Patent
Utility
US 4,357,880 · App. 06/180,835
Bolster for a railroad car truck
Inventor:
Hans B. Weber
Patented Case
View Patent ↗
Granted: Nov 9, 1982
Filed: Aug 25, 1980
Inventor
Hans B. Weber
Assignee (at issue)
Midland-Ross Corporation
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.