Improvements in or relating to talking picture apparatus,申请号GB19290033976-传众专利搜索

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发明名称	Improvements in or relating to talking picture apparatus
摘要
申请公布号	GB341170(A)	申请公布日期	1931.01.15
申请号	GB19290033976	申请日期	1929.11.07
申请人	ARTHUR WILLIAM HARRIS	发明人
分类号	G11B19/265	主分类号	G11B19/265
代理机构		代理人
主权项
地址

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