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发明名称
摘要
申请公布号
JPS6447813(U)
申请公布日期
1989.03.24
申请号
JP19870141679U
申请日期
1987.09.18
申请人
发明人
分类号
E01H5/04;E01H5/09;(IPC1-7):E01H5/04
主分类号
E01H5/04
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