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发明名称
Clock
摘要
申请公布号
US1935760(A)
申请公布日期
1933.11.21
申请号
US19320623874
申请日期
1932.07.21
申请人
AMBURGEY CLARENCE E
发明人
AMBURGEY CLARENCE E.
分类号
G04B5/20
主分类号
G04B5/20
代理机构
代理人
主权项
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