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发明名称
Method and apparatus for relieving pressure
摘要
申请公布号
GB0106933(D0)
申请公布日期
2001.05.09
申请号
GB20010006933
申请日期
1999.09.20
申请人
SCHLUMBERGER TECHNOLOGY CORPORATION
发明人
分类号
E21B34/06;E21B41/00
主分类号
E21B34/06
代理机构
代理人
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地址
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