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发明名称
BOREHOLE CLOSURE PLUG
摘要
申请公布号
EP0291925(B1)
申请公布日期
1993.02.03
申请号
EP19880107872
申请日期
1988.05.17
申请人
THERMOPLAST & APPARATEBAU GMBH
发明人
GERSTENBERG, KLAUS
分类号
E21B33/127
主分类号
E21B33/127
代理机构
代理人
主权项
地址
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