Granted Patent
Utility
US 6,813,920 · App. 10/459,347
Method for producing a bumper reinforcement
Inventors:
Hiroshi Yoshida, Hiroshi Goto, Koji Shimotsu
Patented Case
View Patent ↗
Granted: Nov 9, 2004
Filed: Jun 11, 2003
Inventors
Hiroshi Yoshida
Hiroshi Goto
Koji Shimotsu
Assignee (at issue)
ASTEER 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.