Sound translating apparatus,申请号US19510223865-传众专利搜索

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发明名称	Sound translating apparatus
摘要
申请公布号	US2688373(A)	申请公布日期	1954.09.07
申请号	US19510223865	申请日期	1951.05.01
申请人	RADIO CORPORATION	发明人	OLSON HARRY F.
分类号	H04R1/28	主分类号	H04R1/28
代理机构		代理人
主权项
地址

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