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摘要
申请公布号
JP3616800(B2)
申请公布日期
2005.02.02
申请号
JP19950100344
申请日期
1995.03.31
申请人
发明人
分类号
E21B15/00;E02D7/16;(IPC1-7):E02D7/16
主分类号
E21B15/00
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