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发明名称
Rotary hook and bobbin-case device for sewing machines
摘要
申请公布号
US1995278(A)
申请公布日期
1935.03.19
申请号
US19340725282
申请日期
1934.05.12
申请人
THE SINGER MANUFACTURING COMPANY
发明人
KESSLER CHARLES A.
分类号
D05B57/14
主分类号
D05B57/14
代理机构
代理人
主权项
地址
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