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摘要
申请公布号
SU426803(A1)
申请公布日期
1974.05.05
申请号
SU19711721174
申请日期
1971.12.06
申请人
发明人
分类号
B24B19/06;B24B21/02;(IPC1-7):B24B19/06
主分类号
B24B19/06
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