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发明名称
Frequency standard
摘要
申请公布号
US2564636(A)
申请公布日期
1951.08.14
申请号
US19460671553
申请日期
1946.05.22
申请人
HAMILTON WATCH COMPANY
发明人
JR. WILLIAM OGLE BENNETT,;KOEHLER FRED
分类号
G04C3/06
主分类号
G04C3/06
代理机构
代理人
主权项
地址
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