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发明名称
Adjustment device for the frequency of spiral balances
摘要
申请公布号
US2541286(A)
申请公布日期
1951.02.13
申请号
US19470750600
申请日期
1947.05.26
申请人
COMPAGNIE INDUSTRIELLE DE MECANIQUE HORLOGERE
发明人
RENAUD JEAN
分类号
G04D7/12
主分类号
G04D7/12
代理机构
代理人
主权项
地址
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