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发明名称
Foldable pen
摘要
申请公布号
USRE30346(E1)
申请公布日期
1980.07.22
申请号
US06/042069
申请日期
1979.05.24
申请人
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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