Granted Patent
Utility
US 5,454,475 · App. 08/216,177
Lubrication means for slack-free railcar connections
Inventor:
Horst T. Kaufhold
Patented Case
View Patent ↗
Granted: Oct 3, 1995
Filed: Mar 22, 1994
Inventor
Horst T. Kaufhold
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.