Granted Patent
Utility
US 5,637,786 · App. 08/498,193
Series parallel heated oxygen sensor heater control
Inventors:
David Charles Weber, Alan Michael Rooke
Patented Case
View Patent ↗
Granted: Jun 10, 1997
Filed: Jul 5, 1995
Inventors
David Charles Weber
Alan Michael Rooke
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.