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发明名称
摘要
申请公布号
JP2545161(Y2)
申请公布日期
1997.08.25
申请号
JP19920060311U
申请日期
1992.08.27
申请人
发明人
分类号
E21D9/08;E21D9/06;(IPC1-7):E21D9/06
主分类号
E21D9/08
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