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发明名称
Program device
摘要
申请公布号
US1791927(A)
申请公布日期
1931.02.10
申请号
US19230671686
申请日期
1923.10.30
申请人
INTERNATIONAL TIME RECORDING COMPANY OF NEW YORK
发明人
GEIGER EDWARD F.
分类号
G04C21/30
主分类号
G04C21/30
代理机构
代理人
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地址
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