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发明名称
摘要
申请公布号
JPH01174411(U)
申请公布日期
1989.12.12
申请号
JP19880069229U
申请日期
1988.05.24
申请人
发明人
分类号
E01H1/00;E01H1/05;(IPC1-7):E01H1/05
主分类号
E01H1/00
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代理人
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