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3910346
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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2593705
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Patent number 2,593,705
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A21 - BAKING EDIBLE DOUGHS
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2576050
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Patent number 2,576,050
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Issue date Nov 20, 1951
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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2502589
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Patent number 2,502,589
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B67 - OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS LIQUID...
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2494719
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Patent number 2,494,719
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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969018
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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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880360
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F28 - HEAT EXCHANGE IN GENERAL
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751187
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F28 - HEAT EXCHANGE IN GENERAL
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717493
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Patent number 717,493
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F28 - HEAT EXCHANGE IN GENERAL
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644649
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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