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发明名称
Improvements in and relating to timepieces
摘要
申请公布号
GB333853(A)
申请公布日期
1930.08.21
申请号
GB19290039394
申请日期
1929.12.24
申请人
HANS WILSDORF
发明人
HANS WILSDORF
分类号
G04B37/04
主分类号
G04B37/04
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代理人
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