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Thick film circuit board
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Patent number 4,581,279
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Issue date Apr 8, 1986
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Hitachi, Ltd.
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Nobuyuki Sugishita
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H01 - BASIC ELECTRIC ELEMENTS
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Magnetic head
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Patent number 4,450,494
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Issue date May 22, 1984
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Hitachi Ltd.
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Hideo Fujiwara
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G11 - INFORMATION STORAGE
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Magnetic head
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Patent number 4,316,228
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Issue date Feb 16, 1982
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Hitachi, Ltd.
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Hideo Fujiwara
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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