Granted Patent
Utility
US 4,276,833 · App. 05/958,790
Railway truck friction stabilizing assembly
Inventor:
Robert L. Bullock
Patented Case
View Patent ↗
Granted: Jul 7, 1981
Filed: Nov 8, 1978
Inventor
Robert L. Bullock
Assignee (at issue)
STANDARD CAR TRUCK COMPANY
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.