Granted Patent
Utility
US 4,258,628 · App. 06/047,272
Articulated railway coupling
Inventor:
Russell G. Altherr
Patented Case
View Patent ↗
Granted: Mar 31, 1981
Filed: Jun 11, 1979
Inventor
Russell G. Altherr
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.