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Fresh air cooling device
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Patent number 9,714,770
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Issue date Jul 25, 2017
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Hoffman Enclosures, Inc.
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Michael Steven Rasmussen
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Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
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Air purification system
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Patent number 4,726,824
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Issue date Feb 23, 1988
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Michael D. Staten
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F24 - HEATING RANGES VENTILATING
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3120796
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Patent number 3,120,796
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Issue date Feb 11, 1964
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F24 - HEATING RANGES VENTILATING