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发明名称
Thread tension device for sewing machines
摘要
申请公布号
US2701694(A)
申请公布日期
1955.02.08
申请号
US19520277621
申请日期
1952.03.20
申请人
WHITE SEWING MACHINE CORPORATION
发明人
HAMLETT SIDNEY J.
分类号
D05B47/02
主分类号
D05B47/02
代理机构
代理人
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地址
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