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发明名称
摘要
申请公布号
JPS5553320(Y2)
申请公布日期
1980.12.10
申请号
JP19740062038U
申请日期
1974.05.31
申请人
发明人
分类号
B24B31/00;B24B37/00;(IPC1-7):B24B37/00
主分类号
B24B31/00
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