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发明名称
摘要
申请公布号
JP2628169(B2)
申请公布日期
1997.07.09
申请号
JP19870198217
申请日期
1987.08.10
申请人
发明人
分类号
E01C23/12;E01C23/00;E04G23/02;(IPC1-7):E01C23/00
主分类号
E01C23/12
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代理人
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