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发明名称
摘要
申请公布号
JPH0720247(Y2)
申请公布日期
1995.05.15
申请号
JP19900403019U
申请日期
1990.12.11
申请人
发明人
分类号
E01F8/00;E04B1/82;(IPC1-7):E04B1/82
主分类号
E01F8/00
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代理人
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