Improvements in or relating to sound records,申请号GB19300018784-传众专利搜索

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发明名称	Improvements in or relating to sound records
摘要
申请公布号	GB357958(A)	申请公布日期	1931.09.21
申请号	GB19300018784	申请日期	1930.06.19
申请人	THE GRAMOPHONE COMPANY LIMITED;SAMUEL WHYTE	发明人
分类号	G11B3/70	主分类号	G11B3/70
代理机构		代理人
主权项
地址

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