Granted Patent
Utility
US 4,434,720 · App. 06/349,717
Multi-rate side bearing for a railway truck
Inventors:
Harry W. Mulcahy, Horst T. Kaufhold
Patented Case
View Patent ↗
Granted: Mar 6, 1984
Filed: Feb 18, 1982
Inventors
Harry W. Mulcahy
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.