Granted Patent
Utility
US 4,745,902 · App. 06/868,588
Ignition timing control method for internal combustion engine
Inventors:
Shizuo Yagi, Yoshiaki Hirosawa, Makoto Kawai, Yorihisa Yamamoto, Haruhiko Yoshikawa, Kenichi Nakamuna
Patented Case
View Patent ↗
Granted: May 24, 1988
Filed: May 30, 1986
Inventors
Shizuo Yagi
Yoshiaki Hirosawa
Makoto Kawai
Yorihisa Yamamoto
Haruhiko Yoshikawa
Kenichi Nakamuna
Assignee (at issue)
HONDA 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.