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发明名称
摘要
申请公布号
SU558786(A1)
申请公布日期
1977.05.25
申请号
SU19762324107
申请日期
1976.02.10
申请人
发明人
分类号
B24B47/08;(IPC1-7):B24B47/08
主分类号
B24B47/08
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代理人
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地址
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