Disposition de couplage pour bloqueurs d'écho dans de longues communications à quarte,申请号FRD761950-传众专利搜索

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发明名称	Disposition de couplage pour bloqueurs d'écho dans de longues communications à quarte
摘要
申请公布号	FR761950(A)	申请公布日期	1934.03.30
申请号	FRD761950	申请日期	1933.09.09
申请人	SIEMENS & HALSKE AKTIENGESELLSCHAFT	发明人
分类号	H04B3/20	主分类号	H04B3/20
代理机构		代理人
主权项
地址

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