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发明名称
Genaehtes Knopfloch und Maschine zu dessen Herstellung
摘要
申请公布号
DE499904(C)
申请公布日期
1930.06.16
申请号
DE1928S088988D
申请日期
1928.12.22
申请人
THE SINGER MANUFACTURING COMPANY
发明人
分类号
D05B3/06;D05B73/12
主分类号
D05B3/06
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代理人
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