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发明名称
Corrective clock system
摘要
申请公布号
US2289636(A)
申请公布日期
1942.07.14
申请号
US19390280245
申请日期
1939.06.21
申请人
GENERAL TIME INSTRUMENTS CORPORATION
发明人
ENGEL GEORGE C.
分类号
G04C11/04
主分类号
G04C11/04
代理机构
代理人
主权项
地址
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