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发明名称
摘要
申请公布号
JP2557853(Y2)
申请公布日期
1997.12.17
申请号
JP19920030599U
申请日期
1992.05.11
申请人
发明人
分类号
E02B3/12;B09B1/00;E02D3/00;(IPC1-7):E02B3/12
主分类号
E02B3/12
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代理人
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