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发明名称
摘要
申请公布号
JPH01138908(U)
申请公布日期
1989.09.22
申请号
JP19880027719U
申请日期
1988.03.01
申请人
发明人
分类号
E01F7/00;(IPC1-7):E01F7/00
主分类号
E01F7/00
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