Granted Patent
Utility
US 6,445,997 · App. 09/829,090
Controller and storage medium for detecting cold engine operation
Inventor:
Eric D. Thomas
Patented Case
View Patent ↗
Granted: Sep 3, 2002
Filed: Apr 9, 2001
Inventor
Eric D. Thomas
Assignee (at issue)
DETROIT DIESEL CORPORATION
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.