Granted Patent
Utility
US 6,744,135 · App. 10/147,073
Electronic apparatus
Inventors:
Takehiko Hasebe, Takehide Yokozuka, Nobuyuki Ushifusa, Masahide Harada, Eiji Matsuzaki, Hiroshi Hozoji
Patented Case
View Patent ↗
Granted: Jun 1, 2004
Filed: May 17, 2002
Inventors
Takehiko Hasebe
Takehide Yokozuka
Nobuyuki Ushifusa
Masahide Harada
Eiji Matsuzaki
Hiroshi Hozoji
Assignee (at issue)
HITACHI, 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.