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发明名称
摘要
申请公布号
JPS5515949(Y2)
申请公布日期
1980.04.14
申请号
JP19770041118U
申请日期
1977.04.01
申请人
发明人
分类号
B24B3/38;(IPC1-7):B24B3/38
主分类号
B24B3/38
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代理人
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