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发明名称
Multiple-barrel power spring assembly
摘要
申请公布号
US2628690(A)
申请公布日期
1953.02.17
申请号
US19510222573
申请日期
1951.04.24
申请人
ELGIN NATIONAL WATCH COMPANY
发明人
FAVRET MAXIME
分类号
G04B1/12
主分类号
G04B1/12
代理机构
代理人
主权项
地址
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