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发明名称
Pencil sharpener
摘要
申请公布号
US3227140(A)
申请公布日期
1966.01.04
申请号
US19640372865
申请日期
1964.06.05
申请人
APSCO PRODUCTS, INC.
发明人
BRAND ROBERT J.
分类号
B43L23/04
主分类号
B43L23/04
代理机构
代理人
主权项
地址
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