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发明名称
MONOLOCH-RISER AUSWAHL-GERÄT
摘要
申请公布号
DE69709075(D1)
申请公布日期
2002.01.24
申请号
DE19976009075
申请日期
1997.03.27
申请人
EXPRO NORTH SEA LTD., DYCE
发明人
EDWARDS, CHARLES;MORGAN, GRAHAM
分类号
E21B23/12;E21B33/035;(IPC1-7):E21B23/12
主分类号
E21B23/12
代理机构
代理人
主权项
地址
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