Granted Patent
Utility
US 5,333,926 · App. 08/036,015
Railway wheel
Inventors:
C. Dale Christie, Michael T. Gallagher, Michael J. Hendricksen, John D. Oliver, Mark A. Polzin
Patented Case
View Patent ↗
Granted: Aug 2, 1994
Filed: Mar 23, 1993
Inventors
C. Dale Christie
Michael T. Gallagher
Michael J. Hendricksen
John D. Oliver
Mark A. Polzin
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.