High frequency transducer,申请号GB19990025674-传众专利搜索

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发明名称	High frequency transducer
摘要
申请公布号	GB9925674(D0)	申请公布日期	1999.12.29
申请号	GB19990025674	申请日期	1999.10.29
申请人	KEF AUDIO (UK) LIMITED	发明人
分类号	H04R7/12	主分类号	H04R7/12
代理机构		代理人
主权项
地址

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