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发明名称
HYDRAULISCHER RUETTLER
摘要
申请公布号
DE3140144(A1)
申请公布日期
1982.05.27
申请号
DE19813140144
申请日期
1981.10.09
申请人
HALLIBURTON CO.
发明人
KENT BECK,HAROLD
分类号
E21B31/113;(IPC1-7):E21B31/10
主分类号
E21B31/113
代理机构
代理人
主权项
地址
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