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发明名称
IMPROVEMENTS IN THE PLUGGING OF WELLS
摘要
申请公布号
IE42833(B1)
申请公布日期
1980.10.22
申请号
IE19760001193
申请日期
1976.06.03
申请人
CAMBELL D
发明人
分类号
E21B33/13;E21B47/09;(IPC1-7):E21B33/13
主分类号
E21B33/13
代理机构
代理人
主权项
地址
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