Granted Patent
Utility
US 6,756,962 · App. 10/149,061
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Inventors:
Hajime Akimoto, Yoshirou Mikami
Patented Case
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Granted: Jun 29, 2004
Filed: Jun 7, 2002
Inventors
Hajime Akimoto
Yoshirou Mikami
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.