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经营范围
发明名称
Silencer for Pile
摘要
申请公布号
KR101029579(B1)
申请公布日期
2011.04.15
申请号
KR20090087418
申请日期
2009.09.16
申请人
发明人
分类号
E21B10/36;E02D7/08
主分类号
E21B10/36
代理机构
代理人
主权项
地址
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