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发明名称
Screw thread structure.
摘要
申请公布号
EP0459960(B1)
申请公布日期
1994.07.27
申请号
EP19910850122
申请日期
1991.05.14
申请人
SANDVIK AKTIEBOLAG
发明人
YOUSEF, FAISAL J.;KANE, ROBERT F.;HAM, JOEL;MILDREN, DAVID
分类号
E21B17/042;F16B31/06;F16B33/02;(IPC1-7):F16B33/02;F16B35/04;E21B1/00
主分类号
E21B17/042
代理机构
代理人
主权项
地址
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