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发明名称
Reminder clock
摘要
申请公布号
US3233401(A)
申请公布日期
1966.02.08
申请号
US19640349093
申请日期
1964.03.03
申请人
HOFFMAN HAROLD A;JULIUS ELLMAN
发明人
HOFFMAN HAROLD A.;ELLMAN JULIUS
分类号
G04C21/30
主分类号
G04C21/30
代理机构
代理人
主权项
地址
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