Perfectionnements aux machines parlantes et analogues,申请号FRD38815-传众专利搜索

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发明名称	Perfectionnements aux machines parlantes et analogues
摘要
申请公布号	FR38815(E)	申请公布日期	1931.07.31
申请号	FRD38815	申请日期	1930.07.15
申请人	COLUMBIA GRAPHOPHONE COMPANY LIMITED	发明人
分类号	G11B25/04	主分类号	G11B25/04
代理机构		代理人
主权项
地址

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