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发明名称
摘要
申请公布号
JPH0412143(Y2)
申请公布日期
1992.03.25
申请号
JP19870167446U
申请日期
1987.10.30
申请人
发明人
分类号
E03F5/10;(IPC1-7):E03F5/10
主分类号
E03F5/10
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