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发明名称
Separable button
摘要
申请公布号
US1774134(A)
申请公布日期
1930.08.26
申请号
US19290350181
申请日期
1929.03.27
申请人
SHEPHERD DWYER NELLIE
发明人
DWYER NELLIE SHEPHERD
分类号
A44B1/34
主分类号
A44B1/34
代理机构
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