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发明名称
摘要
申请公布号
JPH053526(Y2)
申请公布日期
1993.01.28
申请号
JP19870141032U
申请日期
1987.09.16
申请人
发明人
分类号
E01C19/48;(IPC1-7):E01C19/48
主分类号
E01C19/48
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