Granted Patent
Utility
US 5,176,083 · App. 07/689,492
Railroad car truck damping member with open cavity and support rib construction
Inventor:
Robert L. Bullock
Patented Case
View Patent ↗
Granted: Jan 5, 1993
Filed: Apr 23, 1991
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.