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经营范围
发明名称
Two-step radial expansion
摘要
申请公布号
GB0200161(D0)
申请公布日期
2002.02.20
申请号
GB20020000161
申请日期
2000.07.07
申请人
ENVENTURE GLOBAL TECHNOLOGY LLC
发明人
分类号
E21B43/10;F16L13/14;F16L13/16
主分类号
E21B43/10
代理机构
代理人
主权项
地址
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