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发明名称
FREMGANGSMAATE FOR BESTEMMELSE AV EN SIKKER DENSITETSVERDI FOR ET BOREFLUID.
摘要
申请公布号
NO880565(D0)
申请公布日期
1988.02.09
申请号
NO19880000565
申请日期
1988.02.09
申请人
FOREX NEPTUNE SA
发明人
BRUCE, SUE
分类号
E21B21/08;E21B49/00;(IPC1-7):E21B21/00
主分类号
E21B21/08
代理机构
代理人
主权项
地址
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