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Patents Grants
last 30 patents
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Patent Grant
Optical switch, element therefor, and optical switching method
Patent number
6,870,983
Issue date
Mar 22, 2005
Hitachi, Ltd.
Hideto Momose
G02 - OPTICS
Patents Applications
last 30 patents
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Patent Application
Optical switch, element therefor, and optical switching method
Publication number
20040105612
Publication date
Jun 3, 2004
Hitachi, Ltd.
Hideto Momose
G02 - OPTICS