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发明名称
摘要
申请公布号
JPH04122451(U)
申请公布日期
1992.11.04
申请号
JP19910025629U
申请日期
1991.04.16
申请人
发明人
分类号
B24B49/16;(IPC1-7):B24B49/16
主分类号
B24B49/16
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代理人
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