Granted Patent
Utility
US 5,230,399 · App. 07/795,693
Four-wheel steering system for vehicles
Inventor:
John R. Plate
Patented Case
View Patent ↗
Granted: Jul 27, 1993
Filed: Nov 21, 1991
Inventor
John R. Plate
Assignee (at issue)
TRAK INTERNATIONAL, LLC
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.