Individual speaker system for outdoor theaters,申请号US19510247954-传众专利搜索

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发明名称	Individual speaker system for outdoor theaters
摘要
申请公布号	US2784252(A)	申请公布日期	1957.03.05
申请号	US19510247954	申请日期	1951.09.24
申请人	JONES DONALD A	发明人	JONES DONALD A.
分类号	H04R1/08	主分类号	H04R1/08
代理机构		代理人
主权项
地址

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