Granted Patent
Utility
US 4,721,442 · App. 06/848,960
Fuel injection pump
Inventor:
Noritoshi Tanaka
Patented Case
View Patent ↗
Granted: Jan 26, 1988
Filed: Apr 7, 1986
Inventor
Noritoshi Tanaka
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.