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ELECTRET-CONTAINING FILTER MEDIA
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CHARGE RETENTION MEDIUM
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Publication date Oct 3, 2013
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TAKASHI NAKANO
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C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
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Publication date Aug 8, 2013
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ASAHI GLASS COMPANY, LIMITED
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Takashi NAKANO
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B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
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Hybrid Electret
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Hsi-Hsin SHIH
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H01 - BASIC ELECTRIC ELEMENTS
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Condenser microphone
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Publication number 20070230722
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Publication date Oct 4, 2007
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Mitsuyoshi Mori
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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METHOD OF USING FLUORINATED ELECTRETS
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Publication number 20040065196
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Publication date Apr 8, 2004
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3M Innovative Properties Company
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Marvin E. Jones
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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METHOD OF MAKING FLUORINATED ELECTRETS
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Publication number 20030177908
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Publication date Sep 25, 2003
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3M Innovative Properties Company
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Marvin E. Jones
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Fluorinated electret
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Publication number 20020152892
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Publication date Oct 24, 2002
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Marvin E. Jones
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H01 - BASIC ELECTRIC ELEMENTS