Improvements in or relating to electro-mechanical transducers,申请号GB19590030648-传众专利搜索

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发明名称	Improvements in or relating to electro-mechanical transducers
摘要
申请公布号	GB886757(A)	申请公布日期	1962.01.10
申请号	GB19590030648	申请日期	1959.09.08
申请人	ROLA CELESTION LIMITED	发明人	YOUNG ARTHUR CHARLES
分类号	H04R9/02;H04R9/06	主分类号	H04R9/02
代理机构		代理人
主权项
地址

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