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发明名称
Pocket clip and sharpener for lead pencils
摘要
申请公布号
US2477326(A)
申请公布日期
1949.07.26
申请号
US19470759147
申请日期
1947.07.05
申请人
BYRON F. NOVITSKY
发明人
BALL RAYMOND A.
分类号
B43K25/02
主分类号
B43K25/02
代理机构
代理人
主权项
地址
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