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发明名称
Digital clock system
摘要
申请公布号
US3130297(A)
申请公布日期
1964.04.21
申请号
US19610150603
申请日期
1961.11.06
申请人
VENN DOUGLAS A;JONES DONALD H
发明人
VENN DOUGLAS A.;JONES DONALD H.
分类号
G04G9/08
主分类号
G04G9/08
代理机构
代理人
主权项
地址
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