Granted Patent
Utility
US 5,404,720 · App. 08/106,749
Alternator powered electrically heated catalyst
Inventor:
Paul M. Laing
Patented Case
View Patent ↗
Granted: Apr 11, 1995
Filed: Aug 16, 1993
Inventor
Paul M. Laing
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.