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发明名称
PRESSURE CORE BARREL
摘要
申请公布号
GB2054009(B)
申请公布日期
1983.04.07
申请号
GB19800019675
申请日期
1980.06.17
申请人
PRESSURE CORE BARREL
发明人
分类号
E21B25/08;(IPC1-7):E21B25/08
主分类号
E21B25/08
代理机构
代理人
主权项
地址
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