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经营范围
发明名称
Construction Apparatus
摘要
申请公布号
KR100723299(B1)
申请公布日期
2007.05.30
申请号
KR20050120518
申请日期
2005.12.09
申请人
发明人
分类号
E21B15/00
主分类号
E21B15/00
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代理人
主权项
地址
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