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发明名称
摘要
申请公布号
JPH0118707(Y2)
申请公布日期
1989.05.31
申请号
JP19850023479U
申请日期
1985.02.22
申请人
发明人
分类号
E01H5/00;E01H5/12;E03F5/02;E03F5/04;(IPC1-7):E03F5/02
主分类号
E01H5/00
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