Rueckmelder fuer Telephonstellen,申请号DE1931B148906D-传众专利搜索

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发明名称	Rueckmelder fuer Telephonstellen
摘要
申请公布号	DE624996(C)	申请公布日期	1936.02.01
申请号	DE1931B148906D	申请日期	1931.03.14
申请人	ING. RUDOLF MAX BRAUN;ING. RUDOLF MAX BRAUN	发明人
分类号	H04M1/64	主分类号	H04M1/64
代理机构		代理人
主权项
地址

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