Abhoersperre fuer Wechselsprechanlagen,申请号DE1951E004692-传众专利搜索

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发明名称	Abhoersperre fuer Wechselsprechanlagen
摘要
申请公布号	DE895778(C)	申请公布日期	1953.11.05
申请号	DE1951E004692	申请日期	1951.11.27
申请人	ELECTROACUSTIC GESELLSCHAFT M.B.H.	发明人	OTTEN HANS
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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