Granted Patent
Utility
US 4,943,920 · App. 07/182,101
Operation control method for a frictional engagement element
Inventors:
Takeo Hiramatsu, Tetsuo Ozaki, Kenjiro Fujita
Patented Case
View Patent ↗
Granted: Jul 24, 1990
Filed: Apr 15, 1988
Inventors
Takeo Hiramatsu
Tetsuo Ozaki
Kenjiro Fujita
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.