Granted Patent
Utility
US 6,315,139 · App. 09/281,123
Device for elastically supporting the coupling shaft of a central buffer coupling at a rail-borne vehicle
Inventor:
Joachim Kreher
Patented Case
View Patent ↗
Granted: Nov 13, 2001
Filed: Mar 29, 1999
Inventor
Joachim Kreher
Assignee (at issue)
Scharfenbergkupplung GmbH & Co. KG
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.