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Heating system
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Patent number 9,920,937
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Issue date Mar 20, 2018
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ProGreen Labs, LLC
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James H Lau
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F24 - HEATING RANGES VENTILATING
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Heating system
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Patent number 9,593,857
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Issue date Mar 14, 2017
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ProGreen Labs, LLC
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James H Lau
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F24 - HEATING RANGES VENTILATING
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Treatment device of a heating system
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Patent number 9,488,373
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Issue date Nov 8, 2016
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ProGreen Labs, LLC
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James H Lau
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Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
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Ionizer
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Patent number 6,769,420
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Issue date Aug 3, 2004
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Kazuo Motouchi
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F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
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