SHIELD-TYPE ROOF SUPPORT,申请号PL19820237172-传众专利搜索

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发明名称	SHIELD-TYPE ROOF SUPPORT
摘要
申请公布号	PL137194(B1)	申请公布日期	1986.05.31
申请号	PL19820237172	申请日期	1982.06.28
申请人		发明人
分类号	E21D;E21D23/06;(IPC1-7):E21D23/06	主分类号	E21D
代理机构		代理人
主权项
地址

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