Perfectionnements aux systèmes téléphoniques ou similaires,申请号FRD807654-传众专利搜索

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发明名称	Perfectionnements aux systèmes téléphoniques ou similaires
摘要
申请公布号	FR807654(A)	申请公布日期	1937.01.19
申请号	FRD807654	申请日期	1936.06.10
申请人	AUTOMATIC ELECTRIC COMPANY LIMITED	发明人
分类号	H04Q1/34	主分类号	H04Q1/34
代理机构		代理人
主权项
地址

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