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经营范围
发明名称
Inserts for tools, especially for rock drill bits
摘要
申请公布号
GB767862(A)
申请公布日期
1957.02.06
申请号
GB19540031176
申请日期
1954.10.28
申请人
STORA KOPPARBERGS BERGSLAGS AKTIEBOLAG
发明人
分类号
E21B10/46;E21B10/56;E21B10/58
主分类号
E21B10/46
代理机构
代理人
主权项
地址
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