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Soot blower unit
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Patent number 5,687,449
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Issue date Nov 18, 1997
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Bergemann GmbH
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Richard Zachay
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F28 - HEAT EXCHANGE IN GENERAL
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Soot-removal blower
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Patent number 5,040,262
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Issue date Aug 20, 1991
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Bergemann
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Karl Albers
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F28 - HEAT EXCHANGE IN GENERAL
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Soot blower
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Patent number 4,583,496
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Issue date Apr 22, 1986
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Bergemann GmbH
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Karl Albers
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F28 - HEAT EXCHANGE IN GENERAL
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Soot blaster
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Patent number 4,399,773
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Issue date Aug 23, 1983
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Bergemann GmbH
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Hans Schwade
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F28 - HEAT EXCHANGE IN GENERAL