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发明名称
Rotary hook for sewing machines
摘要
申请公布号
US2019284(A)
申请公布日期
1935.10.29
申请号
US19340715256
申请日期
1934.03.13
申请人
THE SINGER MANUFACTURING COMPANY
发明人
WESSON GEORGE W.
分类号
D05B57/14;D05B73/12
主分类号
D05B57/14
代理机构
代理人
主权项
地址
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