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GB606205A
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Gas burner
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GB606538A
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Hot water boiler
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Subatmospheric gas burner
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GB500318A
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Improvements in or relating to apparatus for generating mixed steam and combustion products for use in heating systems
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Generating mixed fluid heating medium
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Method of utilizing combustion gases
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GB465033A
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Apparatus for generating mixed steam and combustion products for use in a heating system
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Generating heating medium
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Method and apparatus for generating heating medium
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Method of heating
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DE585764C
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Heating system in which steam and flue gases serve as heat bodies
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Heating apparatus
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Method of heating
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CA448434A
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Hot water boiler
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CA372457A
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Heating medium generating apparatus
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