Granted Patent
Utility
US 5,497,655 · App. 08/418,225
Controlling resistance heaters on exhaust gas oxygen sensors
Inventors:
Thomas Scott Gee, Paul F. Smith, Michael John Cullen
Patented Case
View Patent ↗
Granted: Mar 12, 1996
Filed: Apr 6, 1995
Inventors
Thomas Scott Gee
Paul F. Smith
Michael John Cullen
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.