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发明名称
Method for catching drop balls
摘要
申请公布号
GB2427634(A8)
申请公布日期
2007.03.13
申请号
GB20060013768
申请日期
2004.04.20
申请人
SPECIALISED PETROLEUM SERVICES GROUP LIMITED
发明人
GEORGE TELFER
分类号
E21B34/14;E21B23/00;E21B23/08
主分类号
E21B34/14
代理机构
代理人
主权项
地址
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