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发明名称
Timepiece
摘要
申请公布号
US1989584(A)
申请公布日期
1935.01.29
申请号
US19330660579
申请日期
1933.03.13
申请人
WILLIAM BIEDENFELD
发明人
BIEDENFELD WILLIAM
分类号
G04B19/08
主分类号
G04B19/08
代理机构
代理人
主权项
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