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发明名称
摘要
申请公布号
JPS5221510(Y1)
申请公布日期
1977.05.17
申请号
JP19700060284U
申请日期
1970.06.19
申请人
发明人
分类号
B24B49/02;B23Q15/02;(IPC1-7):B23Q15/02
主分类号
B24B49/02
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代理人
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