Granted Patent
Utility
US 4,154,170 · App. 05/859,772
Rail car transporting and shipping system
Inventor:
Harold L. Williams
Patented Case
View Patent ↗
Granted: May 15, 1979
Filed: Dec 12, 1977
Inventor
Harold L. Williams
Assignee (at issue)
Caterpillar Tractor Co.
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.