Granted Patent
Utility
US 5,709,177 · App. 08/549,764
Exhaust valve timing control responsive to engine idling and shut-down
Inventors:
David Richard Worth, Mark D. Archer, Brian Anthony Fitzgerald
Patented Case
View Patent ↗
Granted: Jan 20, 1998
Filed: Nov 30, 1995
Inventors
David Richard Worth
Mark D. Archer
Brian Anthony Fitzgerald
Assignee (at issue)
Orbital Engine 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.