Granted Patent
Utility
US 5,230,615 · App. 07/947,843
Fuel injection pump having oil temporarily-storing groove
Inventors:
Ryokiti Yoshino, Hiroaki Nozaki, Ken Unoki
Patented Case
View Patent ↗
Granted: Jul 27, 1993
Filed: Sep 21, 1992
Inventors
Ryokiti Yoshino
Hiroaki Nozaki
Ken Unoki
Assignee (at issue)
Zexel GmbH
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.