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发明名称
Wrist watch
摘要
申请公布号
US1818637(A)
申请公布日期
1931.08.11
申请号
US19270239772
申请日期
1927.12.13
申请人
GEORGE P. DIKE
发明人
MATHEZ SAMUEL
分类号
G04B37/12
主分类号
G04B37/12
代理机构
代理人
主权项
地址
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