Perfectionnements aux systèmes de télécommunication,申请号FRD952852-传众专利搜索

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发明名称	Perfectionnements aux systèmes de télécommunication
摘要
申请公布号	FR952852(A)	申请公布日期	1949.11.25
申请号	FRD952852	申请日期	1947.09.10
申请人	INTERNATIONAL STANDARD ELECTRIC CORPORATION	发明人	DEAKIN GERARD
分类号	H04Q1/18	主分类号	H04Q1/18
代理机构		代理人
主权项
地址

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