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发明名称
Safety pin
摘要
申请公布号
US1774083(A)
申请公布日期
1930.08.26
申请号
US19290387636
申请日期
1929.08.22
申请人
WOODARD COLBY
发明人
COLBY WOODARD
分类号
A44B9/14
主分类号
A44B9/14
代理机构
代理人
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