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发明名称
Clock
摘要
申请公布号
US2070087(A)
申请公布日期
1937.02.09
申请号
US19350029462
申请日期
1935.07.02
申请人
LANDON MCNAIR FRANK
发明人
MCNAIR FRANK LANDON
分类号
G04B19/22
主分类号
G04B19/22
代理机构
代理人
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