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发明名称
Plugs for downhole tools
摘要
申请公布号
GB9525044(D0)
申请公布日期
1996.02.07
申请号
GB19950025044
申请日期
1995.12.07
申请人
NODECO LIMITED
发明人
分类号
E21B33/16
主分类号
E21B33/16
代理机构
代理人
主权项
地址
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