Granted Patent
Utility
US 5,109,821 · App. 07/642,511
Engine control system
Inventors:
Masato Yoshida, Takanao Yokoyama, Muneyoshi Nanba, Yoshihiko Kato, Kazumasa Iida, Katsuhiko Miyamoto
Patented Case
View Patent ↗
Granted: May 5, 1992
Filed: Jan 17, 1991
Inventors
Masato Yoshida
Takanao Yokoyama
Muneyoshi Nanba
Yoshihiko Kato
Kazumasa Iida
Katsuhiko Miyamoto
Assignee (at issue)
MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
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.