Schaltungsanordnung fuer Fernsprechanlagen mit Verstaerkern,申请号DE1927S081195D-传众专利搜索

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发明名称	Schaltungsanordnung fuer Fernsprechanlagen mit Verstaerkern
摘要
申请公布号	DE491003(C)	申请公布日期	1930.02.05
申请号	DE1927S081195D	申请日期	1927.08.14
申请人	SIEMENS & HALSKE AKT.-GES.	发明人	PFLEIDERER DIPL.-ING. FRITZ;DAHMS RUDOLF
分类号	H04M3/40	主分类号	H04M3/40
代理机构		代理人
主权项
地址

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