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经营范围
发明名称
Gerät zur Herstellung eines Kiesmantels.
摘要
申请公布号
DE69010635(D1)
申请公布日期
1994.08.18
申请号
DE19906010635
申请日期
1990.05.14
申请人
HALLIBURTON CO., DUNCAN, OKLA., US
发明人
WHITELEY, THOMAS G., HOUSTON, TEXAS 77095, US;CAVENDER, TRAVIS W., ANGELTON, TEXAS 77515, US
分类号
E21B33/12;E21B43/04;(IPC1-7):E21B43/04;E21B33/129;E21B34/14;E21B37/00
主分类号
E21B33/12
代理机构
代理人
主权项
地址
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