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Air circulating apparatus
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Issue date Aug 21, 1990
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Rexon Industrial Corp. Ltd.
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Jui-Chin Chen
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F24 - HEATING RANGES VENTILATING
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Ventilation plant
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Patent number 4,815,522
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Issue date Mar 28, 1989
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Svante Thunberg
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F24 - HEATING RANGES VENTILATING
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Regenerative air heater
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Patent number 4,349,069
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Issue date Sep 14, 1982
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Combustion Engineering, Inc.
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Harold F. V. von Beck
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F28 - HEAT EXCHANGE IN GENERAL
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2964298
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Patent number 2,964,298
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Issue date Dec 13, 1960
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F24 - HEATING RANGES VENTILATING
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2892616
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Patent number 2,892,616
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Issue date Jun 30, 1959
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F28 - HEAT EXCHANGE IN GENERAL
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2681209
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Issue date Jun 15, 1954
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F28 - HEAT EXCHANGE IN GENERAL
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2665120
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Patent number 2,665,120
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Issue date Jan 5, 1954
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F28 - HEAT EXCHANGE IN GENERAL
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2499358
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F28 - HEAT EXCHANGE IN GENERAL
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Issue date Jun 1, 1926
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F28 - HEAT EXCHANGE IN GENERAL
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1516108
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Issue date Nov 18, 1924
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F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES