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经营范围
发明名称
Pencil sharpener
摘要
申请公布号
US2584064(A)
申请公布日期
1952.01.29
申请号
US19490087237
申请日期
1949.04.13
申请人
FRANK SWINEHART
发明人
SWINEHART FRANK
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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