-
Air heat exchanger
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Patent number 4,898,234
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Issue date Feb 6, 1990
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McDonnell Douglas Corporation
-
Thomas McGovern
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F28 - HEAT EXCHANGE IN GENERAL
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Isothermal panel and plenum
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Patent number 4,896,719
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Issue date Jan 30, 1990
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McDonnell Douglas Corporation
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Richard F. O'Neill
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F28 - HEAT EXCHANGE IN GENERAL
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Water heating system
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Patent number 4,444,022
-
Issue date Apr 24, 1984
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Aluminum Company of America
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Ronald A. Holt
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F24 - HEATING RANGES VENTILATING
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Water heating system
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Patent number 4,328,683
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Issue date May 11, 1982
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Aluminum Company of America
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Robert B. Whitesides
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F24 - HEATING RANGES VENTILATING