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发明名称
摘要
申请公布号
JP4185998(B2)
申请公布日期
2008.11.26
申请号
JP20030152405
申请日期
2003.05.29
申请人
发明人
分类号
E21B7/00;E02D5/50;E02D7/00
主分类号
E21B7/00
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