PREFABRICATED CEILING SLAB,申请号PL19860260550-传众专利搜索

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发明名称	PREFABRICATED CEILING SLAB
摘要
申请公布号	PL260550(A1)	申请公布日期	1988.05.12
申请号	PL19860260550	申请日期	1986.07.10
申请人		发明人
分类号	E04B;(IPC1-7):E04B/	主分类号	E04B
代理机构		代理人
主权项
地址

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