Granted Patent
Utility
US 4,673,163 · App. 06/814,724
Electromagnetic actuators
Inventors:
Takeo Kushida, Keiichi Yamada
Patented Case
View Patent ↗
Granted: Jun 16, 1987
Filed: Dec 30, 1985
Inventors
Takeo Kushida
Keiichi Yamada
Assignee (at issue)
Diesel Kiki 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.