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发明名称
摘要
申请公布号
JPH07122397(B2)
申请公布日期
1995.12.25
申请号
JP19860303073
申请日期
1986.12.19
申请人
发明人
分类号
E21D11/10;(IPC1-7):E21D11/10
主分类号
E21D11/10
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