Granted Patent
Utility
US 5,860,366 · App. 08/657,333
Center sill construction for a hopper rail car
Inventor:
Todd L. Lydic
Patented Case
View Patent ↗
Granted: Jan 19, 1999
Filed: Jun 3, 1996
Inventor
Todd L. Lydic
Assignee (at issue)
Johnstown America 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.