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发明名称
Portable disk sharpener
摘要
申请公布号
US2475235(A)
申请公布日期
1949.07.05
申请号
US19470777730
申请日期
1947.10.03
申请人
GOODWIN HAROLD M
发明人
GOODWIN HAROLD M.
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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