Perfectionnement aux disposififs de transmission d'appel dans les installations à fréquence porteuse,申请号FRD858563-传众专利搜索

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发明名称	Perfectionnement aux disposififs de transmission d'appel dans les installations à fréquence porteuse
摘要
申请公布号	FR858563(A)	申请公布日期	1940.11.28
申请号	FRD858563	申请日期	1939.08.01
申请人	C. LORENZ AKTIENGESELLSCHAFT	发明人
分类号	H04J1/14	主分类号	H04J1/14
代理机构		代理人
主权项
地址

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