Granted Patent
Utility
US 4,800,861 · App. 07/177,994
Fuel injection system electromagnetic-valve controlled type
Inventors:
Hidekazu Oshizawa, Masataka Ishikawa
Patented Case
View Patent ↗
Granted: Jan 31, 1989
Filed: Apr 5, 1988
Inventors
Hidekazu Oshizawa
Masataka Ishikawa
Assignee (at issue)
501 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.