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经营范围
发明名称
Rock drill
摘要
申请公布号
GB2059482(A)
申请公布日期
1981.04.23
申请号
GB19800030796
申请日期
1980.09.24
申请人
SANDVIK AB
发明人
分类号
E21B10/52;E21B10/38;E21B10/40;E21B10/56;(IPC1-7):E21B10/56
主分类号
E21B10/52
代理机构
代理人
主权项
地址
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