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发明名称
Clock
摘要
申请公布号
US2004909(A)
申请公布日期
1935.06.11
申请号
US19320605589
申请日期
1932.04.16
申请人
AMERICAN METER COMPANY
发明人
BENSON ARTHUR F.
分类号
G04B3/12
主分类号
G04B3/12
代理机构
代理人
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