Granted Patent
Utility
US 4,312,515 · App. 06/114,432
Self-locking step assembly for a vehicle
Inventor:
Raymond J. Allori
Patented Case
View Patent ↗
Granted: Jan 26, 1982
Filed: Jan 22, 1980
Inventor
Raymond J. Allori
Assignee (at issue)
International Harvester Company
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.