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RADIO COMMUNICATIONS SYSTEM
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Publication number 20100234035
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Publication date Sep 16, 2010
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Hitachi, Ltd
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Kenzaburo Fujishima
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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OPTICAL COMMUNICATION SYSTEM
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Publication number 20100086304
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Publication date Apr 8, 2010
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Hitachi Communication Technologies, Ltd.
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Masahiko Mizutani
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Quaternary phase modulator
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Publication number 20090092401
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Publication date Apr 9, 2009
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Hitachi Communication Technologies, Ltd.
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Kenro Sekine
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Optical wavelength add-drop multiplexer
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Publication number 20050226621
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Publication date Oct 13, 2005
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Hitachi Communication Technologies, Ltd.
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Nobuhiko Kikuchi
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Optical add-drop multiplexer
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Publication number 20050175041
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Publication date Aug 11, 2005
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Hitachi Communication Technologies, Ltd.
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Shinya Sasaki
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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