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发明名称
Verfahren zur Herstellung einer Triebfeder für Uhren sowie nach diesem Verfahren erhaltene Triebfeder.
摘要
申请公布号
CH299223(A)
申请公布日期
1954.05.31
申请号
CHD299223
申请日期
1952.01.14
申请人
STRAUMANN,REINHARD,DR.
发明人
STRAUMANN,REINHARD,DR.
分类号
C21D9/02;C22C19/05;G04B1/14
主分类号
C21D9/02
代理机构
代理人
主权项
地址
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