Combination luminous and acoustical ceiling,申请号US19490093620-传众专利搜索

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发明名称	Combination luminous and acoustical ceiling
摘要
申请公布号	US2659807(A)	申请公布日期	1953.11.17
申请号	US19490093620	申请日期	1949.05.16
申请人	THE F. W. WAKEFIELD BRASS COMPANY	发明人	WAKEFIELD GEORGE P.
分类号	E04B9/34;F21S2/00	主分类号	E04B9/34
代理机构		代理人
主权项
地址

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