Improvements in or relating to talking picture mechanism,申请号GB19300009392-传众专利搜索

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发明名称	Improvements in or relating to talking picture mechanism
摘要
申请公布号	GB351520(A)	申请公布日期	1931.06.24
申请号	GB19300009392	申请日期	1930.03.24
申请人	HORACE LYTTLETON VINCENT DAY;ERIC HARCOURT DAY	发明人
分类号	G11B7/00	主分类号	G11B7/00
代理机构		代理人
主权项
地址

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