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发明名称
Pencil sharpener
摘要
申请公布号
US1878617(A)
申请公布日期
1932.09.20
申请号
US19320605891
申请日期
1932.04.18
申请人
BAIR RICHARD H
发明人
BAIR RICHARD H.
分类号
B43L23/08
主分类号
B43L23/08
代理机构
代理人
主权项
地址
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