Granted Patent
Utility
US 5,000,330 · App. 07/428,063
Railway vehicle rotary drawbar arrangement
Inventors:
John W. Kaim, Russell G. Altherr, Horst T. Kaufhold
Patented Case
View Patent ↗
Granted: Mar 19, 1991
Filed: Oct 27, 1989
Inventors
John W. Kaim
Russell G. Altherr
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.