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发明名称
摘要
申请公布号
BE656505(A)
申请公布日期
1965.04.01
申请号
BED656505
申请日期
1964.12.01
申请人
发明人
分类号
B24B31/14;C23F1/00;C23F3/00
主分类号
B24B31/14
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地址
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