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发明名称
Master clock
摘要
申请公布号
US2482061(A)
申请公布日期
1949.09.13
申请号
US19430488189
申请日期
1943.05.24
申请人
LOVELL HAMLIN MARSTON
发明人
HAMLIN MARSTON LOVELL
分类号
G04C3/02
主分类号
G04C3/02
代理机构
代理人
主权项
地址
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