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Fan cleaning method and apparatus
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Patent number 7,320,735
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Issue date Jan 22, 2008
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Airmaster Fan Company
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Stanley J. Riske
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Oscillating fan clutch
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Patent number 7,052,239
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Issue date May 30, 2006
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Airmaster Fan Company
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Stanley J. Riske
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Barrel fan with enclosed motor
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Patent number 6,474,956
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Issue date Nov 5, 2002
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Airmaster Fan Company
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James L. Davis
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Toolless assembled fan
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Patent number 6,364,617
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Issue date Apr 2, 2002
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Airmaster Fan Company
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Stanley J. Riske
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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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...