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Combustion apparatus
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Patent number 4,474,551
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Issue date Oct 2, 1984
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Hitachi, Ltd.
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Kazumi Iwai
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F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
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Low Btu gas burner
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Patent number 4,435,153
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Issue date Mar 6, 1984
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Hitachi, Ltd.
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Takashi Hashimoto
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F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
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Combustion apparatus
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Patent number 4,329,139
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Issue date May 11, 1982
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Hitachi, Ltd.
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Tadashi Shinozaki
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F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES