Granted Patent
Utility
US 5,319,892 · App. 07/980,356
Method for sprue removal and grinding of railroad wheels
Inventors:
C. Dale Christie, Charles W. Taff, Jaime F. Pozo
Patented Case
View Patent ↗
Granted: Jun 14, 1994
Filed: Dec 31, 1992
Inventors
C. Dale Christie
Charles W. Taff
Jaime F. Pozo
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.