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经营范围
发明名称
Improvements in or relating to wall clocks or signs
摘要
申请公布号
GB416380(A)
申请公布日期
1934.09.10
申请号
GB19330007077
申请日期
1933.03.08
申请人
SYDNEY JAMES SMITH
发明人
分类号
G04B37/14
主分类号
G04B37/14
代理机构
代理人
主权项
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