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发明名称
Improvements in electrically driven pendulums for clocks
摘要
申请公布号
GB474454(A)
申请公布日期
1937.11.02
申请号
GB19360012525
申请日期
1936.05.04
申请人
OSWALD CHARLES JONES
发明人
分类号
G04C3/027
主分类号
G04C3/027
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代理人
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