Granted Patent
Utility
US 4,370,964 · App. 06/174,923
Spark ignition timing control system for an internal combustion engine
Inventors:
Shigeo Muranaka, Kunihiko Sugihara, Kiyoshi Takeuchi
Patented Case
View Patent ↗
Granted: Feb 1, 1983
Filed: Aug 4, 1980
Inventors
Shigeo Muranaka
Kunihiko Sugihara
Kiyoshi Takeuchi
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.