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Rotary heat exchange wheel
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Patent number 6,155,334
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Issue date Dec 5, 2000
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Airxchange, Inc.
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Donald F. Steele
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F24 - HEATING RANGES VENTILATING
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Rotary heat regenerator
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Patent number 5,002,116
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Issue date Mar 26, 1991
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Airxchange, Inc.
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Lawrence C. Hoagland
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F24 - HEATING RANGES VENTILATING
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Desiccant heat device
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Patent number 4,875,520
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Issue date Oct 24, 1989
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Airxchange, Inc.
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Donald F. Steele
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Rotary heat regenerator
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Patent number 4,825,936
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Issue date May 2, 1989
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Airxchange, Inc.
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Lawrence C. Hoagland
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F24 - HEATING RANGES VENTILATING
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