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发明名称
ROERKOPPLING.
摘要
申请公布号
FI864270(A)
申请公布日期
1987.04.26
申请号
FI19860004270
申请日期
1986.10.22
申请人
SANDVIK AKTIEBOLAG
发明人
WESTBERG, ALVAR TORSTEN
分类号
E21B17/042;F16L15/04;F16L17/06;(IPC1-7):F16L/
主分类号
E21B17/042
代理机构
代理人
主权项
地址
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