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发明名称
摘要
申请公布号
JPH01149252(U)
申请公布日期
1989.10.16
申请号
JP19880045246U
申请日期
1988.04.05
申请人
发明人
分类号
B24B49/12;B24B7/02;(IPC1-7):B24B7/02
主分类号
B24B49/12
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