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发明名称
摘要
申请公布号
JPS5215078(Y1)
申请公布日期
1977.04.05
申请号
JP19680039523U
申请日期
1968.05.13
申请人
发明人
分类号
E01F15/04;E01F15/00;(IPC1-7):E01F15/00
主分类号
E01F15/04
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