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发明名称
BERGBORRNINGSANORDNING.
摘要
申请公布号
FI922047(A0)
申请公布日期
1992.05.06
申请号
FI19920002047
申请日期
1992.05.06
申请人
TAMROCK OY
发明人
MAEKI, JORMA;PIIPPONEN, JUHA
分类号
E21B;(IPC1-7):E21B/
主分类号
E21B
代理机构
代理人
主权项
地址
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