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发明名称
FOERFARANDE OCH ANORDNING FOER REGLERING AV BERGBORRNING.
摘要
申请公布号
FI912010(A0)
申请公布日期
1991.04.25
申请号
FI19910002010
申请日期
1991.04.25
申请人
TAMROCK OY
发明人
MATTERO, UNTO
分类号
E21B19/08;E21B44/00;E21B44/08;(IPC1-7):E21C/
主分类号
E21B19/08
代理机构
代理人
主权项
地址
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