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发明名称
Sewing machine throat plate retaining means
摘要
申请公布号
US2569091(A)
申请公布日期
1951.09.25
申请号
US19460658271
申请日期
1946.03.29
申请人
MEFINA S. A.
发明人
CASAS-ROBERT RAMON
分类号
D05B73/12;D05B81/00
主分类号
D05B73/12
代理机构
代理人
主权项
地址
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