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发明名称
FREMGANGSMAATE FOR PAKKING AV EN BROENN.
摘要
申请公布号
NO873726(A)
申请公布日期
1988.03.18
申请号
NO19870003726
申请日期
1987.09.07
申请人
DOWELL SCHLUMBERGER INC
发明人
COPELAND, CLAUDE;GURLEY, DERREL
分类号
E21B43/04;(IPC1-7):E21B/
主分类号
E21B43/04
代理机构
代理人
主权项
地址
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