Granted Patent
Utility
US 5,454,330 · App. 08/312,031
Railway truck side bearing
Inventor:
Dennis Rhen
Patented Case
View Patent ↗
Granted: Oct 3, 1995
Filed: Sep 26, 1994
Inventor
Dennis Rhen
Assignee (at issue)
Hansen Corporation
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.