Granted Patent
Utility
US 4,648,326 · App. 06/748,406
Radial axle railway truck with axle couplings at sides transversely interconnected with each other
Inventor:
Keith L. Jackson
Patented Case
View Patent ↗
Granted: Mar 10, 1987
Filed: Jun 24, 1985
Inventor
Keith L. Jackson
Assignee (at issue)
Lukens General Industries, Inc.
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.