Speaker device with improved magnetic ciruit,申请号EP20040256933-传众专利搜索

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发明名称	Speaker device with improved magnetic ciruit
摘要
申请公布号	EP1545151(A3)	申请公布日期	2008.11.19
申请号	EP20040256933	申请日期	2004.11.09
申请人	SONY CORPORATION	发明人	KOBAYASHI, SHINJI
分类号	H04R9/02	主分类号	H04R9/02
代理机构		代理人
主权项
地址

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