Improvements in or relating to sound recording and reproducing apparatus,申请号GB19490004875-传众专利搜索

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发明名称	Improvements in or relating to sound recording and reproducing apparatus
摘要
申请公布号	GB664444(A)	申请公布日期	1952.01.09
申请号	GB19490004875	申请日期	1949.02.23
申请人	ELECTRIC & MUSICAL INDUSTRIES LIMITED	发明人	PAYNE EDWIN MALCOLM;HARRISON HENRY MILBURN
分类号	G11B15/02	主分类号	G11B15/02
代理机构		代理人
主权项
地址

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