Radio signaling system,申请号US19280314885-传众专利搜索

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发明名称	Radio signaling system
摘要
申请公布号	US1942561(A)	申请公布日期	1934.01.09
申请号	US19280314885	申请日期	1928.10.25
申请人	RADIO CORPORATION OF AMERICA	发明人	MATHIEU GASTON ADELIN
分类号	H04J1/00	主分类号	H04J1/00
代理机构		代理人
主权项
地址

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