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发明名称
LAYING APPARATUS
摘要
申请公布号
KR20090052983(A)
申请公布日期
2009.05.27
申请号
KR20070119574
申请日期
2007.11.22
申请人
AHN, HO SUNG
发明人
AHN, HO SUNG
分类号
E21B3/00
主分类号
E21B3/00
代理机构
代理人
主权项
地址
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