Einrichtung zur Anzeige von Frequenzdifferenzen in Wechselstromkreisen,申请号DE1931D061237D-传众专利搜索

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发明名称	Einrichtung zur Anzeige von Frequenzdifferenzen in Wechselstromkreisen
摘要
申请公布号	DE579165(C)	申请公布日期	1933.06.21
申请号	DE1931D061237D	申请日期	1931.05.31
申请人	SIEMENS & HALSKE AKT.-GES.	发明人
分类号	G01R23/02	主分类号	G01R23/02
代理机构		代理人
主权项
地址

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