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发明名称
SHARPENING DEVICE
摘要
申请公布号
GB8926557(D0)
申请公布日期
1990.01.17
申请号
GB19890026557
申请日期
1989.11.24
申请人
EVANS, JOHN C
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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