ROOF SUPPORTS SET FOR USE IN INCLINED DEPOSITS,申请号PL19870265974-传众专利搜索

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发明名称	ROOF SUPPORTS SET FOR USE IN INCLINED DEPOSITS
摘要
申请公布号	PL154724(B1)	申请公布日期	1991.09.30
申请号	PL19870265974	申请日期	1987.05.29
申请人		发明人
分类号	E21D23/00;E21D23/04;(IPC1-7):E21D23/04	主分类号	E21D23/00
代理机构		代理人
主权项
地址

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