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发明名称
摘要
申请公布号
JPS4711686(U)
申请公布日期
1972.10.12
申请号
JP19710014055U
申请日期
1971.03.05
申请人
发明人
分类号
B24B23/00;(IPC1-7):B24B23/00
主分类号
B24B23/00
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代理人
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