,申请号DE193500R4597D-传众专利搜索

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发明名称
摘要
申请公布号	DE690438(C)	申请公布日期	1940.04.25
申请号	DE193500R4597D	申请日期	1935.10.31
申请人	RADIO CORPORATION OF AMERICA	发明人
分类号	C03C3/00;C03C23/00;F16H15/50;H01Q3/44;H01Q15/02;H03C7/02;H03L7/26	主分类号	C03C3/00
代理机构		代理人
主权项
地址

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