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发明名称
Pencil sharpening device
摘要
申请公布号
US3224418(A)
申请公布日期
1965.12.21
申请号
US19610130864
申请日期
1961.08.11
申请人
SWINGLINE INC.
发明人
RUSKIN HENRY;KOHEN SHELDON I.
分类号
B43L23/04
主分类号
B43L23/04
代理机构
代理人
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地址
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