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发明名称
摘要
申请公布号
JPH0720198(Y2)
申请公布日期
1995.05.15
申请号
JP19890027530U
申请日期
1989.03.10
申请人
发明人
分类号
E01C23/09;E02F5/20;(IPC1-7):E02F5/20
主分类号
E01C23/09
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代理人
主权项
地址
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