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发明名称
Safety pin
摘要
申请公布号
US1801955(A)
申请公布日期
1931.04.21
申请号
US19300443312
申请日期
1930.04.11
申请人
FERRONE FRANK D
发明人
FERRONE FRANK D.
分类号
A44B9/18
主分类号
A44B9/18
代理机构
代理人
主权项
地址
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