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发明名称
DEVICE FOR A SURVEYING INSTRUMENT INSTALLED IN A PIPE
摘要
申请公布号
KR100914560(B1)
申请公布日期
2009.09.02
申请号
KR20020058881
申请日期
2002.09.27
申请人
发明人
分类号
E21B44/00
主分类号
E21B44/00
代理机构
代理人
主权项
地址
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