Granted Patent
Utility
US 4,625,653 · App. 06/753,934
High adhesion railway power truck with body spring-supported on the truck structure
Inventor:
Keith L. Jackson
Patented Case
View Patent ↗
Granted: Dec 2, 1986
Filed: Jul 11, 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.