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发明名称
Improvements in or relating to clocks
摘要
申请公布号
GB362518(A)
申请公布日期
1931.12.10
申请号
GB19290037924
申请日期
1930.09.10
申请人
SYDNEY JAMES SMITH
发明人
分类号
G04C3/04
主分类号
G04C3/04
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