Granted Patent
Utility
US 4,790,270 · App. 07/041,131
Direct fuel injected engines
Inventors:
Michael L. McKay, Steven R. Ahern
Patented Case
View Patent ↗
Granted: Dec 13, 1988
Filed: Mar 11, 1987
Inventors
Michael L. McKay
Steven R. Ahern
Assignee (at issue)
Orbital Engine Company Proprietary Limited
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.