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申请公布号
JPH0346074(Y2)
申请公布日期
1991.09.27
申请号
JP19880050153U
申请日期
1988.04.14
申请人
发明人
分类号
E01H5/00;E03F5/02;E03F5/04;(IPC1-7):E03F5/02
主分类号
E01H5/00
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