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发明名称
Looper mechanism or replacement unit for multiple needle lock stitch sewing machines
摘要
申请公布号
US2563639(A)
申请公布日期
1951.08.07
申请号
US19460719480
申请日期
1946.12.31
申请人
BOETTCHER GUSTAV A
发明人
BOETTCHER GUSTAV A.
分类号
D05B57/02
主分类号
D05B57/02
代理机构
代理人
主权项
地址
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