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发明名称
Wellhead cleanup tool
摘要
申请公布号
GB9921640(D0)
申请公布日期
1999.11.17
申请号
GB19990021640
申请日期
1999.09.15
申请人
SPECIALISED PETROLEUM SERVICES LIMITED
发明人
分类号
E21B34/02;E21B34/12;E21B34/14;E21B37/00;E21B37/02;E21B41/00
主分类号
E21B34/02
代理机构
代理人
主权项
地址
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