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经营范围
发明名称
Multiple-band power hone
摘要
申请公布号
GB860092(A)
申请公布日期
1961.02.01
申请号
GB19590012485
申请日期
1959.04.13
申请人
JOHN HANSEN
发明人
分类号
B24B3/58
主分类号
B24B3/58
代理机构
代理人
主权项
地址
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