Granted Patent
Utility
US 6,543,368 · App. 09/169,221
Coil car structure
Inventor:
James W. Forbes
Patented Case
View Patent ↗
Granted: Apr 8, 2003
Filed: Oct 9, 1998
Inventor
James W. Forbes
Assignee (at issue)
National Steel Car Limited
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.