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Aquarium filter
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Patent number D355701
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Issue date Feb 21, 1995
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Willinger Bros., Inc.
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Allan H. Willinger
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D23 - Environmental heating and cooling
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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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Aquarium power head with integral muffler
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Patent number 5,282,727
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Issue date Feb 1, 1994
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Willinger Bros., Inc.
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Allan H. Willinger
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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Air pump
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Patent number D338018
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Issue date Aug 3, 1993
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Willinger Bros., Inc.
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Allan H. Willinger
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D15 - Machines not elsewhere specified
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Aquarium power filter
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Patent number 5,228,986
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Issue date Jul 20, 1993
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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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Aerobic aquarium filter chamber
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Patent number 5,176,824
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Issue date Jan 5, 1993
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Willinger Bros., Inc.
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Allan H. Willinger
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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Aquarium power head with integral muffler
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Patent number 5,137,433
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Issue date Aug 11, 1992
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Willinger Bros., Inc.
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Allan H. Willinger
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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Aquarium filter assembly
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Patent number 5,098,585
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Issue date Mar 24, 1992
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Willinger Bros., Inc.
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Klaus Woltman
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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Aquarium air pump
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Patent number 5,052,904
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Issue date Oct 1, 1991
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Itakura Soki
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Tsuyoshi Itakura
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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Filter cartridge
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Patent number 5,053,125
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Issue date Oct 1, 1991
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Willinger Bros., Inc.
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Allan H. Willinger
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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Air stone
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Patent number 5,034,165
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Issue date Jul 23, 1991
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Willinger Brothers, Inc.
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Allan H. Willinger
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Aquarium filter
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Patent number D317966
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Issue date Jul 2, 1991
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Willinger Bros., Inc.
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Allan H. Willinger
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D23 - Environmental heating and cooling
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Universal clamp for aquarium tank
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Patent number 4,907,772
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Issue date Mar 13, 1990
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Willinger Brothers, Inc.
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Allan H. Willinger
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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External aquarium filter
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Patent number 4,895,646
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Issue date Jan 23, 1990
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Willinger Brothers, Inc.
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Allan H. Willinger
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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Vent valve of an air pump
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Patent number 4,886,093
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Issue date Dec 12, 1989
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Itakura Soki
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Tsuyoshi Itakura
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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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...
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Inside filter for aquariums
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Patent number 4,842,726
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Issue date Jun 27, 1989
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Willinger Brothers, Inc.
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Allan H. Willinger
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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Aquarium filter
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Patent number 4,842,727
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Issue date Jun 27, 1989
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Willinger Brothers, Inc.
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Allan H. Willinger
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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Self priming aquarium filter
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Patent number 4,761,227
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Issue date Aug 2, 1988
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Willinger Bros.
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Allan H. Willinger
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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Inside filter for aquariums
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Patent number 4,753,723
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Issue date Jun 28, 1988
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Willinger Bros., Inc.
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Allan H. Willinger
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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Power unit for aquarium filter assembly
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Patent number 4,735,715
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Issue date Apr 5, 1988
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Willinger Bros., Inc.
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Allan H. Willinger
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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Aquarium power filter
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Patent number D294172
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Issue date Feb 9, 1988
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Willinger Bros. Inc.
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Allan H. Willinger
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D23 - Environmental heating and cooling
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Aquarium tubules
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Patent number 4,714,547
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Issue date Dec 22, 1987
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Willinger Bros., Inc.
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Allan H. Willinger
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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