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Thermal print head
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Patent number 4,742,361
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Issue date May 3, 1988
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Alps Electric Co., Ltd.
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Takatoshi Ishikawa
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H01 - BASIC ELECTRIC ELEMENTS
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Surface acoustic wave device
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Patent number 4,736,128
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Issue date Apr 5, 1988
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Alps Electric Co., Ltd.
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Takehiro Takoshima
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H03 - BASIC ELECTRONIC CIRCUITRY
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Elastic surface wave element
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Patent number 4,734,608
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Issue date Mar 29, 1988
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Alps Electric Co., Ltd.
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Takehiro Takoshima
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H03 - BASIC ELECTRONIC CIRCUITRY
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