Granted Patent
Utility
US 4,459,085 · App. 06/395,441
Pressure control system for automotive pneumatic pressure supply line
Inventor:
Hiroshi Tonegawa
Patented Case
View Patent ↗
Granted: Jul 10, 1984
Filed: Jul 6, 1982
Inventor
Hiroshi Tonegawa
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.