Granted Patent
Utility
US 5,190,017 · App. 07/889,659
Exhaust gas recirculation system fault detector
Inventors:
Michael John Cullen, Rogelio G. Samson, Alistair S. Teasdale, Richard L. Wanat
Patented Case
View Patent ↗
Granted: Mar 2, 1993
Filed: May 28, 1992
Inventors
Michael John Cullen
Rogelio G. Samson
Alistair S. Teasdale
Richard L. Wanat
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.