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Loudspeaker
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Patent number 7,123,738
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Issue date Oct 17, 2006
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Matsushita Electric Industrial Co., Ltd.
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Shinya Mizone
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F21 - LIGHTING
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Voice coil of speaker
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Patent number 7,050,601
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Issue date May 23, 2006
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Matsushita Electric Industrial Co., Ltd.
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Takashi Suzuki
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Speaker damper
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Patent number 5,776,597
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Issue date Jul 7, 1998
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Teijin Limited
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Hirosuke Watanabe
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Loudspeaker
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Patent number 5,664,024
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Issue date Sep 2, 1997
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Matsushita Electric Industrial Co., Ltd.
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Akihiro Furuta
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Diaphragm for electroacoustic transducer
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Patent number 4,753,969
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Issue date Jun 28, 1988
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Onkyo Kabushikikaisha
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Shinya Mizone
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...