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Ceramic laminated circuit substrate
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Patent number 4,998,159
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Issue date Mar 5, 1991
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Hitachi, Ltd.
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Hiroichi Shinohara
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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Semiconductor chip module
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Patent number 4,970,577
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Issue date Nov 13, 1990
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Hitachi, Ltd.
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Satoru Ogihara
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H01 - BASIC ELECTRIC ELEMENTS
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Chip carrier
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Patent number 4,954,877
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Issue date Sep 4, 1990
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Hitachi, Ltd.
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Keiichirou Nakanishi
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H01 - BASIC ELECTRIC ELEMENTS
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