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Heat exchanger
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Patent number 4,722,388
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Issue date Feb 2, 1988
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Chauncey R. Drury
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F28 - HEAT EXCHANGE IN GENERAL
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Recuperator structures
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Patent number 4,049,050
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Issue date Sep 20, 1977
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Owens-Illinois, Inc.
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Donald F. Mold
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F28 - HEAT EXCHANGE IN GENERAL
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3926251
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Patent number 3,926,251
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Issue date Dec 16, 1975
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F28 - HEAT EXCHANGE IN GENERAL
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3841950
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Patent number 3,841,950
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Issue date Oct 15, 1974
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C03 - GLASS MINERAL OR SLAG WOOL
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3602298
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Patent number 3,602,298
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Issue date Aug 31, 1971
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F28 - HEAT EXCHANGE IN GENERAL
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3489208
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Patent number 3,489,208
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Issue date Jan 13, 1970
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F28 - HEAT EXCHANGE IN GENERAL
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3153446
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Patent number 3,153,446
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Issue date Oct 20, 1964
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F28 - HEAT EXCHANGE IN GENERAL
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1850678
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Patent number 1,850,678
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Issue date Mar 22, 1932
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F24 - HEATING RANGES VENTILATING
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1624128
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Patent number 1,624,128
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Issue date Apr 12, 1927
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F28 - HEAT EXCHANGE IN GENERAL
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6107
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Patent number 6,107
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Issue date Feb 13, 1849
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F28 - HEAT EXCHANGE IN GENERAL