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经营范围
发明名称
Liner assembly and method
摘要
申请公布号
GB0013263(D0)
申请公布日期
2000.07.19
申请号
GB20000013263
申请日期
1997.02.28
申请人
SMITH INTERNATIONAL, INC.
发明人
分类号
E21B23/06
主分类号
E21B23/06
代理机构
代理人
主权项
地址
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