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Cartridge filter for purifying gas
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Patent number 7,507,271
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Issue date Mar 24, 2009
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Carl Freudenberg KG
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Thomas Caesar
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Filter system
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Patent number 7,419,524
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Issue date Sep 2, 2008
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Carl Freudenberg KG
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Thomas Caesar
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Cassette filter
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Patent number 7,288,130
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Issue date Oct 30, 2007
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Carl Freudenberg KG
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Renate Tapper
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Cartridge filter
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Patent number 6,146,436
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Issue date Nov 14, 2000
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Firma Carl Freudenberg
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Anthony Hollingsworth
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D04 - BRAIDING LACE-MAKING KNITTING TRIMMINGS NON-WOVEN FABRICS
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Filter cartridge
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Patent number 6,027,542
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Issue date Feb 22, 2000
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Firma Carl Freudenberg
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Andreas Brandhofer
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL