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发明名称
FEEDING CONCRETE INTO A DRILL HOLE DURING ROCK BOLTING
摘要
申请公布号
GB2182696(A)
申请公布日期
1987.05.20
申请号
GB19860024726
申请日期
1986.10.15
申请人
OY * TAMPELLA AB
发明人
JARMO * LEPPANEN
分类号
E04G21/02;E21D20/00;E21D20/02;(IPC1-7):E21D20/00
主分类号
E04G21/02
代理机构
代理人
主权项
地址
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