ELECTRO-ACOUSTIC TRANSDUCERS,申请号GB19770009874-传众专利搜索

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发明名称	ELECTRO-ACOUSTIC TRANSDUCERS
摘要
申请公布号	GB1563738(A)	申请公布日期	1980.03.26
申请号	GB19770009874	申请日期	1978.02.28
申请人	RANK ORGANISATION LTD	发明人
分类号	H04R1/02;(IPC1-7):H04R1/02	主分类号	H04R1/02
代理机构		代理人
主权项
地址

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