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Rotary cartridge filter
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Patent number 8,262,908
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Issue date Sep 11, 2012
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Hubert Patrovsky
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Wave filter for rotary filter
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Patent number 6,582,598
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Issue date Jun 24, 2003
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Hubert Patrovsky
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Filtration system
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Patent number 4,710,288
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Issue date Dec 1, 1987
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Hubert Patrovsky
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL