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发明名称
摘要
申请公布号
JPH0461117(U)
申请公布日期
1992.05.26
申请号
JP19900105452U
申请日期
1990.10.06
申请人
发明人
分类号
E01F9/00;G09F13/24;(IPC1-7):E01F9/00
主分类号
E01F9/00
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