Improvements in and relating to electromechanical transducers,申请号GB19500014218-传众专利搜索

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发明名称	Improvements in and relating to electromechanical transducers
摘要
申请公布号	GB709623(A)	申请公布日期	1954.06.02
申请号	GB19500014218	申请日期	1950.06.07
申请人	COSMOCORD LIMITED;STANLEY KELLY	发明人
分类号	H04R17/04	主分类号	H04R17/04
代理机构		代理人
主权项
地址

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