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Semiconductor laser
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Issue date Aug 4, 1992
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Hitachi, Ltd.
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Takashi Kajimura
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H01 - BASIC ELECTRIC ELEMENTS
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Laser diode
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Patent number 4,821,275
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Issue date Apr 11, 1989
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Hitachi, Ltd.
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Shinichi Nakatsuka
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H01 - BASIC ELECTRIC ELEMENTS
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Semiconductor laser
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Patent number 4,811,354
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Issue date Mar 7, 1989
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Hitachi, Ltd.
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Kazuhisa Uomi
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B82 - NANO-TECHNOLOGY
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Semiconductor laser
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Patent number 4,797,891
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Issue date Jan 10, 1989
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Hitachi, Ltd,
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Kazuhisa Uomi
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H01 - BASIC ELECTRIC ELEMENTS
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Semiconductor laser
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Patent number 4,752,933
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Issue date Jun 21, 1988
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Hitachi, Ltd.
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Kazuhisa Uomi
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H01 - BASIC ELECTRIC ELEMENTS
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Semiconductor device
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Patent number 4,710,787
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Issue date Dec 1, 1987
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Hitachi, Ltd.
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Toshiyuki Usagawa
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H01 - BASIC ELECTRIC ELEMENTS
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