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发明名称
Automatic disk sharpener
摘要
申请公布号
US1852153(A)
申请公布日期
1932.04.05
申请号
US19300501951
申请日期
1930.12.12
申请人
DOUGLAS JOSEPH C
发明人
DOUGLAS JOSEPH C.
分类号
B24B3/46
主分类号
B24B3/46
代理机构
代理人
主权项
地址
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