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发明名称
Clock
摘要
申请公布号
US2281494(A)
申请公布日期
1942.04.28
申请号
US19310515599
申请日期
1931.02.13
申请人
HAMMOND INSTRUMENT COMPANY
发明人
HAMMOND LAURENS
分类号
G04C5/00
主分类号
G04C5/00
代理机构
代理人
主权项
地址
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