Schaltungsanordnung zum Empfang von Wechselstromsignalen in Fernsprechanlagen,申请号DE1935S120367D-传众专利搜索

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发明名称	Schaltungsanordnung zum Empfang von Wechselstromsignalen in Fernsprechanlagen
摘要
申请公布号	DE683377(C)	申请公布日期	1939.11.04
申请号	DE1935S120367D	申请日期	1935.11.07
申请人	SIEMENS & HALSKE AKT.-GES.	发明人	TOEPFER HERBERT
分类号	H04M7/10;H04Q1/442	主分类号	H04M7/10
代理机构		代理人
主权项
地址

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