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经营范围
发明名称
Purge system
摘要
申请公布号
GB0713565(D0)
申请公布日期
2007.08.22
申请号
GB20070013565
申请日期
2006.01.16
申请人
EXPRO NORTH SEA LIMITED
发明人
分类号
E21B33/076
主分类号
E21B33/076
代理机构
代理人
主权项
地址
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