Fernkonferenzschaltung ueber Fernleitungen mit einer beliebigen Zahl von Teilnehmern,申请号DE1943S011607D-传众专利搜索

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发明名称	Fernkonferenzschaltung ueber Fernleitungen mit einer beliebigen Zahl von Teilnehmern
摘要
申请公布号	DE872372(C)	申请公布日期	1953.03.30
申请号	DE1943S011607D	申请日期	1943.10.24
申请人	SIEMENS & HALSKE AKTIENGESELLSCHAFT	发明人	FABER KARL DIPL.-ING.
分类号	H04M3/56	主分类号	H04M3/56
代理机构		代理人
主权项
地址

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