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发明名称
Sharpening device
摘要
申请公布号
US2147464(A)
申请公布日期
1939.02.14
申请号
US19370182313
申请日期
1937.12.29
申请人
SHAW LOUIS E
发明人
SHAW LOUIS E.
分类号
B24D15/06
主分类号
B24D15/06
代理机构
代理人
主权项
地址
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