Granted Patent
Utility
US 5,211,154 · App. 07/968,133
Method and apparatus for maintaining stoichiometric air-to-fuel ratio in an internal combustion engine
Inventor:
Arnold W. Brandt
Patented Case
View Patent ↗
Granted: May 18, 1993
Filed: Oct 29, 1992
Inventor
Arnold W. Brandt
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.