Granted Patent
Utility
US 6,735,150 · App. 10/117,548
Method of and apparatus for distinguishing engine idling and working hours
Inventor:
Steven I. Rothman
Patented Case
View Patent ↗
Granted: May 11, 2004
Filed: Mar 28, 2002
Inventor
Steven I. Rothman
Assignee (at issue)
Micrologic, Inc.
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.