Enclosures for sound reproduction,申请号US19540403242-传众专利搜索

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发明名称	Enclosures for sound reproduction
摘要
申请公布号	US2806547(A)	申请公布日期	1957.09.17
申请号	US19540403242	申请日期	1954.01.11
申请人	SEWELL ROBERT L	发明人	SEWELL ROBERT L.
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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