Granted Patent
Utility
US 5,392,875 · App. 08/230,193
Hydraulic reaction variable assist power steering system
Inventor:
James J. Duffy
Patented Case
View Patent ↗
Granted: Feb 28, 1995
Filed: Apr 20, 1994
Inventor
James J. Duffy
Assignee (at issue)
Ford Motor 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.