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经营范围
发明名称
Downhole stabilizer
摘要
申请公布号
GB9409460(D0)
申请公布日期
1994.07.06
申请号
GB19940009460
申请日期
1994.05.12
申请人
ANDERSON, CHARLES A
发明人
分类号
E21B7/08;E21B17/06;E21B17/10
主分类号
E21B7/08
代理机构
代理人
主权项
地址
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