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发明名称
Borehullsvelger
摘要
申请公布号
NO325768(B1)
申请公布日期
2008.07.14
申请号
NO20010002448
申请日期
2001.05.18
申请人
FMC TECHNOLOGIES INC
发明人
HAMILTON SCOTT MITCHELL
分类号
E21B33/076;E21B23/12;E21B34/04
主分类号
E21B33/076
代理机构
代理人
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地址
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