Granted Patent
Utility
US 4,599,674 · App. 06/706,477
Circuit for driving solenoid
Inventors:
Masataka Ishikawa, Masami Kondo
Patented Case
View Patent ↗
Granted: Jul 8, 1986
Filed: Feb 28, 1985
Inventors
Masataka Ishikawa
Masami Kondo
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.