Granted Patent
Utility
US 5,359,852 · App. 08/117,590
Air fuel ratio feedback control
Inventors:
Judith M. Curran, Thomas Raymond Culbertson, Douglas R. Hamburg
Patented Case
View Patent ↗
Granted: Nov 1, 1994
Filed: Sep 7, 1993
Inventors
Judith M. Curran
Thomas Raymond Culbertson
Douglas R. Hamburg
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.