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发明名称
Verfahren und Vorrichtung zur Zementation von Tiefbohrungen
摘要
申请公布号
AT220109(B)
申请公布日期
1962.03.12
申请号
AT19600004682
申请日期
1960.06.20
申请人
SCHOELLER-BLECKMANN STAHLWERKE AKTIENGESELLSCHAFT
发明人
DIPL. ING. ERNST W. LISCHKE
分类号
E21B33/14
主分类号
E21B33/14
代理机构
代理人
主权项
地址
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