Perfectionnements aux pick-up électriques,申请号FRD57871-传众专利搜索

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发明名称	Perfectionnements aux pick-up électriques
摘要
申请公布号	FR57871(E)	申请公布日期	1953.09.18
申请号	FRD57871	申请日期	1947.12.16
申请人	COMPAGNIE FRANCAISE THOMSON-HOUSTON	发明人
分类号	H04R21/04	主分类号	H04R21/04
代理机构		代理人
主权项
地址

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