Dispositif de réglage pour appareils radio-récepteurs,申请号FRD692939-传众专利搜索

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发明名称	Dispositif de réglage pour appareils radio-récepteurs
摘要
申请公布号	FR692939(A)	申请公布日期	1930.11.13
申请号	FRD692939	申请日期	1929.06.29
申请人	SOCIETE DES ETABLISSEMENTS DUCRETET	发明人
分类号		主分类号
代理机构		代理人
主权项
地址

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