Granted Patent
Utility
US 4,464,896 · App. 06/359,542
System for supplying secondary air for an internal combustion engine
Inventor:
Masaharu Kubota
Patented Case
View Patent ↗
Granted: Aug 14, 1984
Filed: Mar 18, 1982
Inventor
Masaharu Kubota
Assignee (at issue)
Fuji Jukogyo Kabushiki Kaisha
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.