Perfectionnements apportés aux installations télégraphiques du type automatique,申请号FRD724083-传众专利搜索

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发明名称	Perfectionnements apportés aux installations télégraphiques du type automatique
摘要
申请公布号	FR724083(A)	申请公布日期	1932.04.21
申请号	FRD724083	申请日期	1931.09.11
申请人	INTERNATIONAL INVENTIONS CORPORATION	发明人
分类号	H04L21/00;H04L21/02	主分类号	H04L21/00
代理机构		代理人
主权项
地址

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