Granted Patent
Utility
US 5,732,587 · App. 08/806,143
Metallic workpiece having to-be-ironed section and method for forming the same
Inventors:
Akihiro Maeda, Kunihiko Araki
Patented Case
View Patent ↗
Granted: Mar 31, 1998
Filed: Feb 25, 1997
Inventors
Akihiro Maeda
Kunihiko Araki
Assignees (at issue)
MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
Heian Manufacturing 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.