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Semiconductor device
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Issue date Mar 19, 1991
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Hitachi, Ltd.
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Tadashi Fukuzawa
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H01 - BASIC ELECTRIC ELEMENTS
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Semiconductor laser
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Patent number 4,759,030
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Issue date Jul 19, 1988
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Hitachi, Ltd.
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Yoshimasa Murayama
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B82 - NANO-TECHNOLOGY
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Semiconductor laser device
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Patent number 4,430,741
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Issue date Feb 7, 1984
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Hitachi, Ltd.
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Tadashi Fukuzawa
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H01 - BASIC ELECTRIC ELEMENTS
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Semiconductor laser device
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Patent number 4,426,700
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Issue date Jan 17, 1984
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Hitachi, Ltd.
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Motohisa Hirao
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H01 - BASIC ELECTRIC ELEMENTS
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Semiconductor laser device
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Patent number 4,366,567
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Issue date Dec 28, 1982
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Hitachi, Ltd.
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Tadashi Fukuzawa
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H01 - BASIC ELECTRIC ELEMENTS
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Semiconductor laser device
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Patent number 4,288,757
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Issue date Sep 8, 1981
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Hitachi, Ltd.
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Takashi Kajimura
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H01 - BASIC ELECTRIC ELEMENTS
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Semiconductor laser device
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Patent number 4,257,011
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Issue date Mar 17, 1981
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Hitachi, Ltd.
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Michiharu Nakamura
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H01 - BASIC ELECTRIC ELEMENTS
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Semiconductor laser device
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Patent number 4,178,604
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Issue date Dec 11, 1979
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Hitachi, Ltd.
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Michiharu Nakamura
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H01 - BASIC ELECTRIC ELEMENTS
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Semiconductor laser device
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Patent number 4,176,325
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Issue date Nov 27, 1979
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Hitachi, Ltd.
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Takashi Kajimura
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H01 - BASIC ELECTRIC ELEMENTS