Granted Patent
Utility
US 5,577,584 · App. 08/316,964
Multiple pressure-to-current relations in a system having a solenoid-operated hydraulic valve
Inventor:
Walter Joseph Ortmann
Patented Case
View Patent ↗
Granted: Nov 26, 1996
Filed: Oct 3, 1994
Inventor
Walter Joseph Ortmann
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.