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发明名称
Tension-releaser for sewing machines
摘要
申请公布号
GB507318(A)
申请公布日期
1939.06.13
申请号
GB19390004942
申请日期
1939.02.15
申请人
THE SINGER MANUFACTURING COMPANY
发明人
分类号
D05B3/08
主分类号
D05B3/08
代理机构
代理人
主权项
地址
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