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3565168
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Patent number 3,565,168
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Issue date Feb 23, 1971
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F26 - DRYING
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1595291
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Patent number 1,595,291
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Issue date Aug 10, 1926
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A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
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1340177
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Patent number 1,340,177
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Issue date May 18, 1920
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A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
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1324157
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Patent number 1,324,157
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Issue date Dec 9, 1919
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F28 - HEAT EXCHANGE IN GENERAL
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1250980
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Patent number 1,250,980
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Issue date Dec 25, 1917
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F28 - HEAT EXCHANGE IN GENERAL
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954660
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Patent number 954,660
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Issue date Apr 12, 1910
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F28 - HEAT EXCHANGE IN GENERAL
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925833
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Patent number 925,833
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Issue date Jun 22, 1909
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F28 - HEAT EXCHANGE IN GENERAL
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885813
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Patent number 885,813
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Issue date Apr 28, 1908
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F28 - HEAT EXCHANGE IN GENERAL
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840602
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Patent number 840,602
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Issue date Jan 8, 1907
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F28 - HEAT EXCHANGE IN GENERAL
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761667
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Patent number 761,667
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Issue date Jun 7, 1904
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F28 - HEAT EXCHANGE IN GENERAL
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733742
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Patent number 733,742
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Issue date Jul 14, 1903
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F28 - HEAT EXCHANGE IN GENERAL
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722886
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Patent number 722,886
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Issue date Mar 17, 1903
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F28 - HEAT EXCHANGE IN GENERAL
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708845
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Patent number 708,845
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Issue date Sep 9, 1902
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F28 - HEAT EXCHANGE IN GENERAL
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623231
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Patent number 623,231
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Issue date Apr 18, 1899
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F28 - HEAT EXCHANGE IN GENERAL
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623230
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Patent number 623,230
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Issue date Apr 18, 1899
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F28 - HEAT EXCHANGE IN GENERAL
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288357
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Patent number 288,357
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Issue date Nov 13, 1883
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F28 - HEAT EXCHANGE IN GENERAL
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283098
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Patent number 283,098
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Issue date Aug 14, 1883
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F28 - HEAT EXCHANGE IN GENERAL
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265046
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Patent number 265,046
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Issue date Sep 26, 1882
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F28 - HEAT EXCHANGE IN GENERAL
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249978
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Patent number 249,978
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Issue date Nov 22, 1881
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F28 - HEAT EXCHANGE IN GENERAL
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226172
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Patent number 226,172
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Issue date Apr 6, 1880
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F28 - HEAT EXCHANGE IN GENERAL
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174537
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Patent number 174,537
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Issue date Mar 7, 1876
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F28 - HEAT EXCHANGE IN GENERAL
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155836
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Patent number 155,836
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Issue date Oct 13, 1874
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F28 - HEAT EXCHANGE IN GENERAL
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148107
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Patent number 148,107
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Issue date Mar 3, 1874
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F28 - HEAT EXCHANGE IN GENERAL
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124112
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Patent number 124,112
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Issue date Feb 27, 1872
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F28 - HEAT EXCHANGE IN GENERAL
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8466
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Patent number 8,466
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Issue date Oct 28, 1851
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F28 - HEAT EXCHANGE IN GENERAL