Granted Patent
Utility
US 4,916,794 · App. 07/260,101
Method of and apparatus for reconditioning railway car draft gears
Inventor:
Peter A. Loonam
Patented Case
View Patent ↗
Granted: Apr 17, 1990
Filed: Oct 20, 1988
Inventor
Peter A. Loonam
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.