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发明名称
VIELFACHES PIEZOMETER UND ANWENDUNG EINES DERARTIGEN PIEZOMETERS.
摘要
申请公布号
AT39540(T)
申请公布日期
1989.01.15
申请号
AT19850900677T
申请日期
1985.01.04
申请人
LOUIS, CLAUDE
发明人
LOUIS, CLAUDE
分类号
E21B33/124;E21B47/06;(IPC1-7):E21B47/06
主分类号
E21B33/124
代理机构
代理人
主权项
地址
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