Perfectionnements aux systèmes de signalisation à hautes fréquences,申请号FRD773796-传众专利搜索

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发明名称	Perfectionnements aux systèmes de signalisation à hautes fréquences
摘要
申请公布号	FR773796(A)	申请公布日期	1934.11.26
申请号	FRD773796	申请日期	1934.05.29
申请人	LE MATERIEL TELEPHONIQUE SOCIETE ANONYME	发明人
分类号	H04B3/00;H04J1/00	主分类号	H04B3/00
代理机构		代理人
主权项
地址

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