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发明名称
摘要
申请公布号
JP2560659(Y2)
申请公布日期
1998.01.26
申请号
JP19910020923U
申请日期
1991.03.11
申请人
发明人
分类号
B24B7/20;B42C17/00;(IPC1-7):B24B7/20
主分类号
B24B7/20
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