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Compact aquarium filter
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Patent number 5,002,660
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Issue date Mar 26, 1991
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Aquaria, Inc.
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Robert Sherman
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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Freestanding aquarium filter
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Patent number 4,601,821
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Issue date Jul 22, 1986
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Aquaria, Inc.
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Robert M. Sherman
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Filter cartridge
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Patent number 4,483,769
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Issue date Nov 20, 1984
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Aquaria, Inc.
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Robert M. Sherman
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Magnetically coupled aquarium filter
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Patent number 4,093,547
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Issue date Jun 6, 1978
-
Aquaria, Inc.
-
Robert M. Sherman
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING