Granted Patent
Utility
US 6,520,166 · App. 09/972,824
Method of identifying engine cylinder combustion sequence based on combustion quality
Inventors:
Philip Allen Karau, Raymond O. Butler, Jr.
Patented Case
View Patent ↗
Granted: Feb 18, 2003
Filed: Oct 5, 2001
Inventors
Philip Allen Karau
Raymond O. Butler, Jr.
Assignee (at issue)
Delphi Technologies
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.