Schaltungsanordnung fuer die Anzeige von Rufzeichen in Fernsprechanlagen mittels Glimmroehren,申请号DE1931S098789D-传众专利搜索

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发明名称	Schaltungsanordnung fuer die Anzeige von Rufzeichen in Fernsprechanlagen mittels Glimmroehren
摘要
申请公布号	DE641188(C)	申请公布日期	1937.01.22
申请号	DE1931S098789D	申请日期	1931.05.20
申请人	SIEMENS & HALSKE AKT.-GES.	发明人	GRETENER DR.-ING. EDGAR
分类号	H04Q1/30	主分类号	H04Q1/30
代理机构		代理人
主权项
地址

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