Granted Patent
Utility
US 4,625,840 · App. 06/640,316
Hydraulic control unit for automotive transmissions
Inventors:
Yutaka Kojima, Hisao Ishida
Patented Case
View Patent ↗
Granted: Dec 2, 1986
Filed: Aug 13, 1984
Inventors
Yutaka Kojima
Hisao Ishida
Assignees (at issue)
Diesel Kiki Co., Ltd.
ISUZU MOTORS LIMITED
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.