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发明名称
摘要
申请公布号
JPS5562613(U)
申请公布日期
1980.04.28
申请号
JP19780147274U
申请日期
1978.10.25
申请人
发明人
分类号
E01F7/02;E01F7/00;(IPC1-7):E01F7/00
主分类号
E01F7/02
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代理人
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