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申请公布号
JP3089132(B2)
申请公布日期
2000.09.18
申请号
JP19930088429
申请日期
1993.04.15
申请人
发明人
分类号
E21B11/00;E02D29/063;E02D29/077;E21D9/00;E21D9/06;(IPC1-7):E02D29/063
主分类号
E21B11/00
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