Sound-absorbing subceiling,申请号GB19810023781-传众专利搜索

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发明名称	Sound-absorbing subceiling
摘要
申请公布号	GB2083097(A)	申请公布日期	1982.03.17
申请号	GB19810023781	申请日期	1981.08.04
申请人	ARMSTRONG WORLD INDUSTRIES INC	发明人
分类号	E04B9/34;(IPC1-7):E04B1/82;E04B5/57	主分类号	E04B9/34
代理机构		代理人
主权项
地址

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