Granted Patent
Utility
US 4,528,951 · App. 06/612,007
Fuel injection valve for internal combustion engines
Inventor:
Keiichi Yamada
Patented Case
View Patent ↗
Granted: Jul 16, 1985
Filed: May 18, 1984
Inventor
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.