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发明名称
摘要
申请公布号
JP2542540(Y2)
申请公布日期
1997.07.30
申请号
JP19920003589U
申请日期
1992.01.08
申请人
发明人
分类号
E21D9/06;E21D11/40;(IPC1-7):E21D9/06
主分类号
E21D9/06
代理机构
代理人
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