Granted Patent
Utility
US 6,422,154 · App. 09/504,317
Three-piece railway truck frame having a selectively removable bolster
Inventor:
Jack R. Long
Patented Case
View Patent ↗
Granted: Jul 23, 2002
Filed: Feb 14, 2000
Inventor
Jack R. Long
Assignee (at issue)
Meridian Rail Information Systems Corp.
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.