Signal translating apparatus,申请号US19380226446-传众专利搜索

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发明名称	Signal translating apparatus
摘要
申请公布号	US2231479(A)	申请公布日期	1941.02.11
申请号	US19380226446	申请日期	1938.08.24
申请人	RADIO CORPORATION	发明人	PERRY SYDNEY V.
分类号	H04R7/12	主分类号	H04R7/12
代理机构		代理人
主权项
地址

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