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发明名称
摘要
申请公布号
JPS52152490(U)
申请公布日期
1977.11.18
申请号
JP19760061216U
申请日期
1976.05.17
申请人
发明人
分类号
B24B21/16;(IPC1-7):B24B21/16
主分类号
B24B21/16
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代理人
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