Granted Patent
Utility
US 4,770,430 · App. 07/084,626
Self-steering axle assembly for vehicles
Inventor:
Dennis Lange
Patented Case
View Patent ↗
Granted: Sep 13, 1988
Filed: Aug 11, 1987
Inventor
Dennis Lange
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.