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经营范围
发明名称
Rock drill bit.
摘要
申请公布号
EP0226537(B1)
申请公布日期
1994.06.08
申请号
EP19860810551
申请日期
1986.12.01
申请人
HILTI AKTIENGESELLSCHAFT
发明人
SCHOLZ, DIETER;FLESCH, FRIEDRICH
分类号
E21B10/46;E21B10/44;E21B10/56;E21B10/58;E21C35/18;(IPC1-7):E21B10/58
主分类号
E21B10/46
代理机构
代理人
主权项
地址
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