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发明名称
Clock
摘要
申请公布号
US1929631(A)
申请公布日期
1933.10.10
申请号
US19310580045
申请日期
1931.12.10
申请人
FOWLER ARNO W
发明人
FOWLER ARNO W.
分类号
G04C1/02
主分类号
G04C1/02
代理机构
代理人
主权项
地址
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