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发明名称
摘要
申请公布号
JP2540540(Y2)
申请公布日期
1997.07.09
申请号
JP19930067090U
申请日期
1993.11.22
申请人
发明人
分类号
E02B7/20;E02B7/36;(IPC1-7):E02B7/20
主分类号
E02B7/20
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代理人
主权项
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