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发明名称
CEMENTING DRILL HOLES FOR CEMENT BOLTING OF ROCK
摘要
申请公布号
GB2141467(B)
申请公布日期
1986.07.02
申请号
GB19840013919
申请日期
1984.05.31
申请人
OY * TAMPELLA AB
发明人
ONNI * ISSAKAINEN
分类号
E21D21/00;E21D20/00;E21D20/02;(IPC1-7):E21D20/02
主分类号
E21D21/00
代理机构
代理人
主权项
地址
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