Granted Patent
Utility
US 4,390,129 · App. 06/379,461
Double-injection type fuel injection valve
Inventor:
Kazuo Uchida
Patented Case
View Patent ↗
Granted: Jun 28, 1983
Filed: May 18, 1982
Inventor
Kazuo Uchida
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.