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发明名称
Time-piece incorporating an instantaneously-operating date indicator
摘要
申请公布号
US2934886(A)
申请公布日期
1960.05.03
申请号
US19560576681
申请日期
1956.04.06
申请人
JACK KAUFMAN SAMUEL
发明人
KAUFMAN SAMUEL JACK
分类号
G04B19/253
主分类号
G04B19/253
代理机构
代理人
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