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发明名称
Drill string component
摘要
申请公布号
AU3860593(A)
申请公布日期
1993.11.25
申请号
AU19930038605
申请日期
1993.05.18
申请人
ATLAS COPCO ROCKTECH AB
发明人
BERNDT EKWALL;MARTIN PETERSON;KURT ANDERSSON
分类号
B28D1/14;E21B17/07;E21B17/18;(IPC1-7):E21B17/18
主分类号
B28D1/14
代理机构
代理人
主权项
地址
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