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发明名称
SONDE UND DEREN MEHRDIREKTIONELLE VERANKERUNGSANORDNUNG IM BOHRLOCH.
摘要
申请公布号
DE3776905(D1)
申请公布日期
1992.04.02
申请号
DE19873776905
申请日期
1987.12.23
申请人
INST FRANCAIS DU PETROLE
发明人
WITTRISCH CHRISTIAN
分类号
E21B23/00;E21B23/01;E21B47/00;G01V1/40;G01V11/00;(IPC1-7):E21B23/00
主分类号
E21B23/00
代理机构
代理人
主权项
地址
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