Granted Patent
Utility
US 4,860,792 · App. 07/234,165
Electromagnetic control valve
Inventors:
Kouji Ichihashi, Akira Inaba
Patented Case
View Patent ↗
Granted: Aug 29, 1989
Filed: Aug 19, 1988
Inventors
Kouji Ichihashi
Akira Inaba
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.