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发明名称
摘要
申请公布号
JPS6216108(U)
申请公布日期
1987.01.30
申请号
JP19850107616U
申请日期
1985.07.16
申请人
发明人
分类号
E01F13/00;E01F13/04;G09F7/18;(IPC1-7):E01F13/00
主分类号
E01F13/00
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