Granted Patent
Utility
US 6,751,949 · App. 10/240,113
Exhaust emission control device of internal-combustion engine
Inventors:
Yasuki Tamura, Kazuhito Kawashima
Patented Case
View Patent ↗
Granted: Jun 22, 2004
Filed: Sep 27, 2002
Inventors
Yasuki Tamura
Kazuhito Kawashima
Assignee (at issue)
MITSUBISHI JIDOSHA KOGYO 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.