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发明名称
摘要
申请公布号
JPH03108021(U)
申请公布日期
1991.11.07
申请号
JP19900013742U
申请日期
1990.02.16
申请人
发明人
分类号
E02B3/08;E02D17/20;(IPC1-7):E02B3/08
主分类号
E02B3/08
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