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发明名称
Poraustyökalu
摘要
申请公布号
FI100549(B)
申请公布日期
1997.12.31
申请号
FI19920003484
申请日期
1992.07.31
申请人
SANDVIK AB,
发明人
BRUNGS,ANDERS;HEDLUND,JAN-GUNNAR;JANSSON,KJELL-OVE;AASBERG,BENGT
分类号
E21B7/20;E21B10/40;E21B17/07;(IPC1-7):E21B10/40
主分类号
E21B7/20
代理机构
代理人
主权项
地址
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