Granted Patent
Utility
US 5,482,675 · App. 08/292,511
Cast steel composition for railway components
Inventors:
Hugh V. Shotwell, Earl K. Weber, Sung-Chi Liu
Patented Case
View Patent ↗
Granted: Jan 9, 1996
Filed: Aug 18, 1994
Inventors
Hugh V. Shotwell
Earl K. Weber
Sung-Chi Liu
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.