Granted Patent
Utility
US 4,926,902 · App. 07/298,104
Pressure equalizer valve device of fuel injection pump
Inventors:
Hisashi Nakamura, Satoshi Takahashi, Takayuki Ikeda, Masaaki Ogino
Patented Case
View Patent ↗
Granted: May 22, 1990
Filed: Jan 17, 1989
Inventors
Hisashi Nakamura
Satoshi Takahashi
Takayuki Ikeda
Masaaki Ogino
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.