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发明名称
Horological device
摘要
申请公布号
US2061665(A)
申请公布日期
1936.11.24
申请号
US19350048949
申请日期
1935.11.09
申请人
JOHAN MACHEK
发明人
MACHEK JOHAN
分类号
G04B19/253
主分类号
G04B19/253
代理机构
代理人
主权项
地址
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