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经营范围
发明名称
ZEMENTIERWERKZEUG FUER BOHRLOECHER.
摘要
申请公布号
AT23383(T)
申请公布日期
1986.11.15
申请号
AT19840300723T
申请日期
1984.02.06
申请人
HALLIBURTON COMPANY
发明人
FREEMAN, TOMMIE AUSTIN
分类号
E21B17/14;E21B21/10;E21B33/136;E21B33/14;(IPC1-7):E21B33/14
主分类号
E21B17/14
代理机构
代理人
主权项
地址
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