Granted Patent
Utility
US 4,428,301 · App. 06/289,471
Radial axle railway truck
Inventor:
Keith L. Jackson
Patented Case
View Patent ↗
Granted: Jan 31, 1984
Filed: Aug 3, 1981
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.