Granted Patent
Utility
US 4,679,447 · App. 06/817,921
Method and apparatus for positioning and testing railroad wheels
Inventors:
Christopher Z. Sieradzki, Lyman W. Jeffreys
Patented Case
View Patent ↗
Granted: Jul 14, 1987
Filed: Jan 13, 1986
Inventors
Christopher Z. Sieradzki
Lyman W. Jeffreys
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.