Appareil d'enregistrement électronique,申请号FRD1044419-传众专利搜索

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发明名称	Appareil d'enregistrement électronique
摘要
申请公布号	FR1044419(A)	申请公布日期	1953.11.17
申请号	FRD1044419	申请日期	1951.11.03
申请人	BRITISH TELECOMMUNICATIONS RESEARCH LIMITED	发明人
分类号	H04J3/18;H04Q3/00;H04Q11/04	主分类号	H04J3/18
代理机构		代理人
主权项
地址

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