Improvements in and relating to electromechanical pick-up devices,申请号GB19500014964-传众专利搜索

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发明名称	Improvements in and relating to electromechanical pick-up devices
摘要
申请公布号	GB709624(A)	申请公布日期	1954.06.02
申请号	GB19500014964	申请日期	1950.06.15
申请人	COSMOCORD LIMITED;STANLEY KELLY	发明人
分类号	H04R1/18;H04R17/04	主分类号	H04R1/18
代理机构		代理人
主权项
地址

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