Granted Patent
Utility
US 4,485,931 · App. 06/455,485
Central buffer coupling for rail vehicles
Inventors:
Hilmar Forster, Ernst Vahldiek, Dildar Arbab
Patented Case
View Patent ↗
Granted: Dec 4, 1984
Filed: Jan 4, 1983
Inventors
Hilmar Forster
Ernst Vahldiek
Dildar Arbab
Assignee (at issue)
Scharfenbergkupplung GmbH
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.