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发明名称
Needle threading device
摘要
申请公布号
US2506275(A)
申请公布日期
1950.05.02
申请号
US19470780839
申请日期
1947.10.20
申请人
OLDHAM JOHN H
发明人
OLDHAM JOHN H.
分类号
D05B87/00
主分类号
D05B87/00
代理机构
代理人
主权项
地址
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