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发明名称
Safety pin
摘要
申请公布号
US1826003(A)
申请公布日期
1931.10.06
申请号
US19300451138
申请日期
1930.05.09
申请人
OTTO KERSTENS
发明人
KERSTENS OTTO
分类号
A44B9/14
主分类号
A44B9/14
代理机构
代理人
主权项
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