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发明名称
Anordning og fremgangsmåte for pakningsmontering eller forankring av en innvendig rördel inne i et fôringsrör
摘要
申请公布号
NO20006607(A)
申请公布日期
2001.06.25
申请号
NO20000006607
申请日期
2000.12.22
申请人
SMITH INTERNATIONAL INC
发明人
ROSS, RICHARD
分类号
E21B33/12;E21B33/127;(IPC1-7):E21B33/129
主分类号
E21B33/12
代理机构
代理人
主权项
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