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发明名称
Alternating presser-devices for sewing machines
摘要
申请公布号
US2742009(A)
申请公布日期
1956.04.17
申请号
US19530363464
申请日期
1953.06.23
申请人
THE SINGER MANUFACTURING COMPANY
发明人
ENOS JOHN P.
分类号
D05B27/04;D05B29/06
主分类号
D05B27/04
代理机构
代理人
主权项
地址
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