Bone conduction speaker apparatus having double coil structure,申请号KR20070001656U-传众专利搜索

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发明名称	Bone conduction speaker apparatus having double coil structure
摘要
申请公布号	KR200443212(Y1)	申请公布日期	2008.08.04
申请号	KR20070001656U	申请日期	2007.01.30
申请人		发明人
分类号	H04R9/04;H04R9/02;H04R13/00	主分类号	H04R9/04
代理机构		代理人
主权项
地址

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