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经营范围
发明名称
Collapsible expansion cone
摘要
申请公布号
GB2415979(A)
申请公布日期
2006.01.11
申请号
GB20050016429
申请日期
2003.02.19
申请人
ENVENTURE GLOBAL TECHNOLOGY
发明人
BROCK WAYNE WATSON;DAVID PAUL BRISCO
分类号
E21B43/10
主分类号
E21B43/10
代理机构
代理人
主权项
地址
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