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发明名称
MECHANIZED MINE SUPPORT FOR FILLING WALLS
摘要
申请公布号
PL113849(B1)
申请公布日期
1981.01.31
申请号
PL19780208236
申请日期
1978.07.05
申请人
发明人
分类号
E21D19/04;E21D23/00;E21F;E21F15/02;(IPC1-7):E21F15/02
主分类号
E21D19/04
代理机构
代理人
主权项
地址
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