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Heat exchanger
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Patent number 4,856,580
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Issue date Aug 15, 1989
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Berwind Corporation
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Richard A. Ley
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F28 - HEAT EXCHANGE IN GENERAL
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3688837
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Patent number 3,688,837
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Issue date Sep 5, 1972
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F28 - HEAT EXCHANGE IN GENERAL
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3548926
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Patent number 3,548,926
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Issue date Dec 22, 1970
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F28 - HEAT EXCHANGE IN GENERAL
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3529661
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Patent number 3,529,661
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Issue date Sep 22, 1970
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F28 - HEAT EXCHANGE IN GENERAL
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3457989
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Patent number 3,457,989
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Issue date Jul 29, 1969
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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3255814
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Patent number 3,255,814
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Issue date Jun 14, 1966
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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2899176
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Patent number 2,899,176
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Issue date Aug 11, 1959
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F28 - HEAT EXCHANGE IN GENERAL
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2883163
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Patent number 2,883,163
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Issue date Apr 21, 1959
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F28 - HEAT EXCHANGE IN GENERAL
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2761657
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Patent number 2,761,657
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Issue date Sep 4, 1956
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F28 - HEAT EXCHANGE IN GENERAL
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2753159
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Patent number 2,753,159
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Issue date Jul 3, 1956
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F28 - HEAT EXCHANGE IN GENERAL
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2733898
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Patent number 2,733,898
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Issue date Feb 7, 1956
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F28 - HEAT EXCHANGE IN GENERAL
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2731241
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Patent number 2,731,241
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Issue date Jan 17, 1956
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F28 - HEAT EXCHANGE IN GENERAL
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2610033
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Patent number 2,610,033
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Issue date Sep 9, 1952
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F28 - HEAT EXCHANGE IN GENERAL
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1303470
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Patent number 1,303,470
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Issue date May 13, 1919
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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1086629
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Patent number 1,086,629
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Issue date Feb 10, 1914
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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1036704
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Patent number 1,036,704
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Issue date Aug 27, 1912
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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808321
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Patent number 808,321
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Issue date Dec 26, 1905
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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790466
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Patent number 790,466
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Issue date May 23, 1905
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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158246
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Patent number 158,246
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Issue date Dec 29, 1874
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL