Granted Patent
Utility
US 4,870,939 · App. 07/247,603
Distribution-type fuel injection system controlled by electromagnetic valve
Inventors:
Masataka Ishikawa, Nobukazu Takagi
Patented Case
View Patent ↗
Granted: Oct 3, 1989
Filed: Sep 22, 1988
Inventors
Masataka Ishikawa
Nobukazu Takagi
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.