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发明名称
Improvements in or relating to button hole sewing machines
摘要
申请公布号
GB498968(A)
申请公布日期
1939.01.17
申请号
GB19380010223
申请日期
1938.04.04
申请人
DUERKOPPWERKE AKTIENGESELLSCHAFT
发明人
分类号
D05B3/06
主分类号
D05B3/06
代理机构
代理人
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