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2685132
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Patent number 2,685,132
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Issue date Aug 3, 1954
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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2544349
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Patent number 2,544,349
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Issue date Mar 6, 1951
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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1958891
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Patent number 1,958,891
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Issue date May 15, 1934
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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1942696
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Patent number 1,942,696
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Issue date Jan 9, 1934
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A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
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1937804
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Patent number 1,937,804
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Issue date Dec 5, 1933
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F28 - HEAT EXCHANGE IN GENERAL
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1753522
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Patent number 1,753,522
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Issue date Apr 8, 1930
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A21 - BAKING EDIBLE DOUGHS
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1689917
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Patent number 1,689,917
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Issue date Oct 30, 1928
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
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1580856
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Patent number 1,580,856
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Issue date Apr 13, 1926
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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1574179
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Patent number 1,574,179
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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1511722
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Patent number 1,511,722
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Issue date Oct 14, 1924
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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1472586
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Patent number 1,472,586
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Issue date Oct 30, 1923
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F28 - HEAT EXCHANGE IN GENERAL
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1391075
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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1383419
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F28 - HEAT EXCHANGE IN GENERAL
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1301775
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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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686740
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F28 - HEAT EXCHANGE IN GENERAL
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649604
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F28 - HEAT EXCHANGE IN GENERAL
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F28 - HEAT EXCHANGE IN GENERAL
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479494
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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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88098
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F28 - HEAT EXCHANGE IN GENERAL