Sound translating device,申请号US19380209803-传众专利搜索

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发明名称	Sound translating device
摘要
申请公布号	US2241106(A)	申请公布日期	1941.05.06
申请号	US19380209803	申请日期	1938.05.24
申请人	ASSOCIATED ELECTRIC LABORATORIES, INC.	发明人	WOODRUFF ALBERT E.
分类号	H04R11/00	主分类号	H04R11/00
代理机构		代理人
主权项
地址

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