Granted Patent
Utility
US 4,458,643 · App. 06/473,234
Lubricating oil feeding device for fuel injection pumps
Inventors:
Hiroshi Isobe, Yuji Shimamune, Kouji Yamanoi
Patented Case
View Patent ↗
Granted: Jul 10, 1984
Filed: Mar 8, 1983
Inventors
Hiroshi Isobe
Yuji Shimamune
Kouji Yamanoi
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.