Granted Patent
Utility
US 5,891,266 · App. 08/998,905
Method and system for cutting hub bores in railroad wheels
Inventors:
Neil E. Konrardy, C. Dale Christie, Daniel H. Gray, Brian L. VanLaar
Patented Case
View Patent ↗
Granted: Apr 6, 1999
Filed: Dec 29, 1997
Inventors
Neil E. Konrardy
C. Dale Christie
Daniel H. Gray
Brian L. VanLaar
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.