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发明名称
Watch-fastening device
摘要
申请公布号
US1770462(A)
申请公布日期
1930.07.15
申请号
US19290375110
申请日期
1929.07.01
申请人
LEON CONTREAU PIERRE
发明人
CONTREAU PIERRE LEON
分类号
G04B37/14
主分类号
G04B37/14
代理机构
代理人
主权项
地址
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