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发明名称
DEVICE FOR COVERING DEEP WELL
摘要
申请公布号
KR200195920(Y1)
申请公布日期
2000.09.15
申请号
KR20000007280U
申请日期
2000.03.15
申请人
KOREA GROUNDWATER TECH CO., LTD.
发明人
JI, CHA YONG
分类号
E21B33/00;(IPC1-7):E21B33/00
主分类号
E21B33/00
代理机构
代理人
主权项
地址
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