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经营范围
发明名称
Improvements in electric clocks
摘要
申请公布号
GB461703(A)
申请公布日期
1937.02.23
申请号
GB19350026506
申请日期
1935.09.25
申请人
FRANK HOPE-JONES
发明人
分类号
G04C13/04
主分类号
G04C13/04
代理机构
代理人
主权项
地址
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