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发明名称
Securing device for the pin stem of a button or the like
摘要
申请公布号
US2551196(A)
申请公布日期
1951.05.01
申请号
US19480041330
申请日期
1948.07.29
申请人
B. A. BALLOU & CO., INCORPORATED
发明人
JR. FREDERICK A. BALLOU,
分类号
A44B1/28
主分类号
A44B1/28
代理机构
代理人
主权项
地址
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