Loud-speaker and driving motor therefor,申请号US19380210934-传众专利搜索

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法人/股东/高管

发明名称	Loud-speaker and driving motor therefor
摘要
申请公布号	US2223021(A)	申请公布日期	1940.11.26
申请号	US19380210934	申请日期	1938.05.31
申请人	QUAM-NICHOLS COMPANY	发明人	QUAM JAMES P.
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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