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Flame detecting apparatus
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Patent number 4,527,125
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Issue date Jul 2, 1985
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Hitachi, Ltd.
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Motoshi Miyanaka
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F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
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Digital control circuit
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Patent number 4,522,337
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Issue date Jun 11, 1985
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Hitachi, Ltd.
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Kenzi Toudo
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H03 - BASIC ELECTRONIC CIRCUITRY
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Combustion control apparatus
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Patent number 4,370,126
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Issue date Jan 25, 1983
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Hitaci, Ltd.
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Motoshi Miyanaka
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F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
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