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Aquarium undergravel filter
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Patent number 5,667,672
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Issue date Sep 16, 1997
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Warner-Lambert Company
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Steven Convertino
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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Aquarium filter bag
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Patent number D353649
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Issue date Dec 20, 1994
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Warner-Lambert Company
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Allan H. Willinger
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D23 - Environmental heating and cooling
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Floating impeller assembly
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Patent number 5,282,961
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Issue date Feb 1, 1994
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Willinger Bros., Inc.
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Robert Ellis
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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Rotor impeller assembly
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Patent number 4,861,468
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Issue date Aug 29, 1989
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Willinger Brothers, Inc.
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Allan H. Willinger
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...