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1664872
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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F28 - HEAT EXCHANGE IN GENERAL
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1074361
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F28 - HEAT EXCHANGE IN GENERAL
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F28 - HEAT EXCHANGE IN GENERAL
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F28 - HEAT EXCHANGE IN GENERAL
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F28 - HEAT EXCHANGE IN GENERAL
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F28 - HEAT EXCHANGE IN GENERAL
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Patent number 173,158
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F28 - HEAT EXCHANGE IN GENERAL
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F28 - HEAT EXCHANGE IN GENERAL
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Patent number 106,811
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F28 - HEAT EXCHANGE IN GENERAL
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99502
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Patent number 99,502
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F28 - HEAT EXCHANGE IN GENERAL
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85920
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Patent number 85,920
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F28 - HEAT EXCHANGE IN GENERAL