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发明名称
Rotary take-up for sewing machines
摘要
申请公布号
US2509600(A)
申请公布日期
1950.05.30
申请号
US19480040865
申请日期
1948.07.27
申请人
THE SINGER MANUFACTURING COMPANY
发明人
JOHNSON RALPH E.
分类号
D05B49/04
主分类号
D05B49/04
代理机构
代理人
主权项
地址
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