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发明名称
Renseanordning
摘要
申请公布号
NO981096(D0)
申请公布日期
1998.03.12
申请号
NO19980001096
申请日期
1998.03.12
申请人
WELL-FLOW OIL TOOLS LTD
发明人
ALLEN, ANTHONY
分类号
E21B23/04;E21B23/10;E21B34/14;E21B37/00;E21B41/00;(IPC1-7):E21B
主分类号
E21B23/04
代理机构
代理人
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地址
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