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Hub driven variable height fan
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Patent number 11,773,865
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Issue date Oct 3, 2023
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Dell Products L.P.
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Qinghong He
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Variable fin stack
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Patent number 11,592,882
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Issue date Feb 28, 2023
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Dell Products L.P.
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Ken Nicholas
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F28 - HEAT EXCHANGE IN GENERAL
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Variable height fan
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Patent number 11,240,931
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Issue date Feb 1, 2022
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Dell Products, L.P.
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Qinghong He
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H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR