Granted Patent
Utility
US 6,221,452 · App. 09/168,158
Energy absorbing member
Inventor:
Kazuyoshi Ban
Patented Case
View Patent ↗
Granted: Apr 24, 2001
Filed: Oct 8, 1998
Inventor
Kazuyoshi Ban
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.