Improvements in gramophones and records therefor,申请号GB19290020122-传众专利搜索

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发明名称	Improvements in gramophones and records therefor
摘要
申请公布号	GB334003(A)	申请公布日期	1930.08.28
申请号	GB19290020122	申请日期	1929.07.01
申请人	LEOPOLD FABIAN	发明人
分类号	G11B19/20;G11B23/00	主分类号	G11B19/20
代理机构		代理人
主权项
地址

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