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Economizer with soot blower
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Patent number 4,407,237
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Issue date Oct 4, 1983
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Applied Engineering Co., Inc.
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John H. Merritt
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F28 - HEAT EXCHANGE IN GENERAL
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Economizer with soot blower
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Patent number 4,346,674
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Issue date Aug 31, 1982
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Applied Engineering, Inc.
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John H. Merritt
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F28 - HEAT EXCHANGE IN GENERAL
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Heat exchanger and economizer
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Patent number 4,138,969
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Issue date Feb 13, 1979
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Applied Engineering Co.
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Garris A. Thompson
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F28 - HEAT EXCHANGE IN GENERAL