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经营范围
发明名称
Improvements relating to electric clocks
摘要
申请公布号
GB606387(A)
申请公布日期
1948.08.12
申请号
GB19460001245
申请日期
1946.01.14
申请人
JOHN CHRISTOPHER CURTIS
发明人
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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