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发明名称
TIEFLOCHGESTEINSBOHRKOPF
摘要
申请公布号
DE69309434(D1)
申请公布日期
1997.05.07
申请号
DE19936009434
申请日期
1993.01.18
申请人
SANDVIK AB, SANDVIKEN, SE
发明人
HEDLUND, JAN-GUNNAR, HOUSTON, TEXAS 77095, US;HEDSTROEM, LEIF, HOUSTON, TX 77068, US
分类号
E21B17/046;E21B4/06;E21B4/12;E21B10/38;E21B17/07;(IPC1-7):E21B4/06;B25D17/08;E21B17/00
主分类号
E21B17/046
代理机构
代理人
主权项
地址
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