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Fan with magnetic blades
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Patent number 6,194,798
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Issue date Feb 27, 2001
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Air Concepts, Inc.
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Edward Lopatinsky
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Motorized fan
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Patent number 6,139,277
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Issue date Oct 31, 2000
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Air Concepts, Inc.
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Edward Lopatinsky
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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Air distribution device
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Patent number 4,716,818
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Issue date Jan 5, 1988
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Air Concepts, Inc.
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Carlton E. Brown
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F24 - HEATING RANGES VENTILATING