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Universal bracket for fans
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Patent number 5,033,711
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Issue date Jul 23, 1991
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Airmaster Fan Company
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Daniel A. Gregorich
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Unitary carton system for fans
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Patent number 4,953,698
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Issue date Sep 4, 1990
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Airmaster Fan Company
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Daniel A. Gregorich
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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Interlocking fan guard
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Patent number 4,861,230
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Issue date Aug 29, 1989
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Airmaster Fan Company
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Frank E. Breining
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Low profile shrouded fan system
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Patent number 4,657,478
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Issue date Apr 14, 1987
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Airmaster Fan Company
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Robert H. LaZebnik
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...