Granted Patent
Utility
US 4,453,521 · App. 06/481,234
Method and apparatus for controlling ignition timing in a multicylinder internal combustion engine
Inventors:
Yasuhito Takasu, Shingo Inoue, Toshiharu Iwata
Patented Case
View Patent ↗
Granted: Jun 12, 1984
Filed: Apr 1, 1983
Inventors
Yasuhito Takasu
Shingo Inoue
Toshiharu Iwata
Assignee (at issue)
Nippondenso 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.