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经营范围
发明名称
Mechanical pencil
摘要
申请公布号
US2107816(A)
申请公布日期
1938.02.08
申请号
US19350052969
申请日期
1935.12.05
申请人
EAGLE PENCIL COMPANY
发明人
CHESLER ISIDOR
分类号
B43K21/00
主分类号
B43K21/00
代理机构
代理人
主权项
地址
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