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发明名称
摘要
申请公布号
JP3052054(B2)
申请公布日期
2000.06.12
申请号
JP19960030369
申请日期
1996.02.19
申请人
发明人
分类号
E21F17/00;B08B1/04;E01H1/00;(IPC1-7):E21F17/00
主分类号
E21F17/00
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代理人
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