Granted Patent
Utility
US 5,847,271 · App. 08/646,660
Catalytic converter efficiency monitor
Inventors:
Mark J Poublon, Michael W. Weglarz
Patented Case
View Patent ↗
Granted: Dec 8, 1998
Filed: May 8, 1996
Inventors
Mark J Poublon
Michael W. Weglarz
Assignee (at issue)
Chrysler Group LLC
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.