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发明名称
摘要
申请公布号
JPS543438(Y2)
申请公布日期
1979.02.16
申请号
JP19720091567U
申请日期
1972.08.03
申请人
发明人
分类号
B24B31/10;B24B31/00;(IPC1-7):B24B31/00
主分类号
B24B31/10
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代理人
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