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经营范围
发明名称
Improvements in or relating to alarm mechanism for synchronous electric clocks
摘要
申请公布号
GB623218(A)
申请公布日期
1949.05.13
申请号
GB19470000010
申请日期
1947.01.01
申请人
THOMAS ARTHUR BROWN;PERIVALE CLOCK MANUFACTURING COMPANY LIMITED
发明人
分类号
G04C21/18
主分类号
G04C21/18
代理机构
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