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发明名称
Improvements in or relating to perforating apparatus utilising explosives as perforating medium
摘要
申请公布号
GB828306(A)
申请公布日期
1960.02.17
申请号
GB19560015478
申请日期
1956.05.17
申请人
SCHLUMBERGER WELL SURVEYING CORPORATION
发明人
分类号
E21B43/118
主分类号
E21B43/118
代理机构
代理人
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