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发明名称
Magnetic pencil clip
摘要
申请公布号
US2964812(A)
申请公布日期
1960.12.20
申请号
US19570697921
申请日期
1957.11.21
申请人
JACKSON COOK
发明人
COOK JACKSON
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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