Granted Patent
Utility
US 4,774,922 · App. 07/109,827
Spark ignition timing control system for spark ignition internal combustion engine with quicker advance of spark advance in transition from anti-knock mode to MBI mode control operation
Inventor:
Tatsuo Morita
Patented Case
View Patent ↗
Granted: Oct 4, 1988
Filed: Oct 16, 1987
Inventor
Tatsuo Morita
Assignee (at issue)
Nissan Motor Co., Ltd.
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.