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发明名称
TWO-STAGE DOWNHOLE PACKER
摘要
申请公布号
EP1330591(B1)
申请公布日期
2006.03.22
申请号
EP20010974556
申请日期
2001.10.18
申请人
WEATHERFORD/LAMB, INC.
发明人
FREIHEIT, ROLAND, R;WILKIN, JAMES, F
分类号
E21B33/128;E21B33/12
主分类号
E21B33/128
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代理人
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