Granted Patent
Utility
US 4,984,696 · App. 07/448,370
Railway coupler head strengthened at horn line
Inventor:
Russell G. Altherr
Patented Case
View Patent ↗
Granted: Jan 15, 1991
Filed: Dec 11, 1989
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.