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发明名称
Gerät zur Messung der Druckdifferenz zweier übereinanderliegender Zonen eines Bohrloches
摘要
申请公布号
AT255346(B)
申请公布日期
1967.06.26
申请号
AT19620008785
申请日期
1962.11.08
申请人
SOCIETE DE PROSPECTION ELECTRIQUE SCHLUMBERGER
发明人
分类号
E21B
主分类号
E21B
代理机构
代理人
主权项
地址
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