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发明名称
Writing instrument
摘要
申请公布号
US2928374(A)
申请公布日期
1960.03.15
申请号
US19570639678
申请日期
1957.02.12
申请人
CHARLES BERGONZO
发明人
BERGONZO CHARLES
分类号
B43K24/16;G09F23/00
主分类号
B43K24/16
代理机构
代理人
主权项
地址
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