Loud-speaker system for drive-in theaters,申请号US19480051592-传众专利搜索

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发明名称	Loud-speaker system for drive-in theaters
摘要
申请公布号	US2557408(A)	申请公布日期	1951.06.19
申请号	US19480051592	申请日期	1948.09.28
申请人	BRADY EDWARD B	发明人	BRADY EDWARD B.
分类号	H04R1/02	主分类号	H04R1/02
代理机构		代理人
主权项
地址

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