Lautsprechende Gegensprech-Einrichtung mit einadriger Ringleitung als Verbindungskabel sowie Selbstvermittlung fuer beliebig viele Teilnehmerstellen,申请号DE1951M011032-传众专利搜索

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发明名称	Lautsprechende Gegensprech-Einrichtung mit einadriger Ringleitung als Verbindungskabel sowie Selbstvermittlung fuer beliebig viele Teilnehmerstellen
摘要
申请公布号	DE916304(C)	申请公布日期	1954.08.09
申请号	DE1951M011032	申请日期	1951.09.19
申请人	CHRISTIAN PIERRE MELARD	发明人	MELARD CHRISTIAN PIERRE
分类号	H04M9/00	主分类号	H04M9/00
代理机构		代理人
主权项
地址

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