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经营范围
发明名称
BOHRLOCHMESSWERKZEUG.
摘要
申请公布号
DE3781210(D1)
申请公布日期
1992.09.24
申请号
DE19873781210
申请日期
1987.05.26
申请人
HALLIBURTON CO., DUNCAN, OKLA., US
发明人
BARRINGTON, BURCHUS QUINTON;COPLAND, GEORGE VICTOR, DUNCAN OKLAHOMA 73533, US
分类号
E21B33/124;E21B43/26;E21B47/02;E21B47/08;(IPC1-7):E21B47/08
主分类号
E21B33/124
代理机构
代理人
主权项
地址
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