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发明名称
摘要
申请公布号
GB972224(A)
申请公布日期
1964.10.07
申请号
GB19630036891
申请日期
1963.09.19
申请人
NORTON COMPANY
发明人
分类号
B24B45/00;B24B53/053
主分类号
B24B45/00
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代理人
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