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发明名称
Automatic watch mainspring winding mechanism
摘要
申请公布号
US2756559(A)
申请公布日期
1956.07.31
申请号
US19520280325
申请日期
1952.04.03
申请人
HAMILTON WATCH COMPANY
发明人
DERR KENNETH W.
分类号
G04B5/02
主分类号
G04B5/02
代理机构
代理人
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地址
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