ELECTRO ACOUSTIC TRANSDUCERS,申请号GB19710059930-传众专利搜索

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发明名称	ELECTRO ACOUSTIC TRANSDUCERS
摘要
申请公布号	GB1364669(A)	申请公布日期	1974.08.29
申请号	GB19710059930	申请日期	1971.12.23
申请人	STANDARD TELEPHONES CABLES LTD	发明人
分类号	H04R11/00;(IPC1-7):H04R11/00;H04R11/02;H04R11/04;H04R11/06	主分类号	H04R11/00
代理机构		代理人
主权项
地址

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