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发明名称
摘要
申请公布号
JPH0731974(Y2)
申请公布日期
1995.07.26
申请号
JP19890072032U
申请日期
1989.06.20
申请人
发明人
分类号
E02F3/02;B25D17/04;B25D17/24;E03C1/086;(IPC1-7):B25D17/04
主分类号
E02F3/02
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