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发明名称
WORKMEN'S TIME RECORDER
摘要
申请公布号
CA483504(A)
申请公布日期
1952.05.27
申请号
CAD483504
申请日期
申请人
PAUL FEHR
发明人
PAUL FEHR
分类号
主分类号
代理机构
代理人
主权项
地址
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