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发明名称
摘要
申请公布号
JPS427723(Y1)
申请公布日期
1967.04.17
申请号
JP19640006378U
申请日期
1964.01.31
申请人
发明人
分类号
E01F7/02;E01F7/00;E01F7/04;E02D17/20;(IPC1-7):E01F7/00
主分类号
E01F7/02
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