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发明名称
Synchronized clock
摘要
申请公布号
US1954780(A)
申请公布日期
1934.04.17
申请号
US19300447482
申请日期
1930.04.26
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
ALLEN RALPH CHARLES
分类号
G04C13/03
主分类号
G04C13/03
代理机构
代理人
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