Granted Patent
Utility
US 6,345,661 · App. 09/827,856
Method of making depressed center railcars
Inventor:
Gabe M. Kassab
Patented Case
View Patent ↗
Granted: Feb 12, 2002
Filed: Apr 6, 2001
Inventor
Gabe M. Kassab
Assignee (at issue)
Kasgro Rail Corporation
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.