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发明名称
MINE ROOF SUPPORTS
摘要
申请公布号
GB2021669(B)
申请公布日期
1982.05.12
申请号
GB19790016679
申请日期
1979.05.14
申请人
CENTRALNY OSRODEK PROJEKTOWO - KONSTRUKCYJNY MASZYN GORN
发明人
分类号
E21D23/00;E21D23/04;(IPC1-7):E21D19/02
主分类号
E21D23/00
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代理人
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