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发明名称
Electric control system for clocks
摘要
申请公布号
US2053077(A)
申请公布日期
1936.09.01
申请号
US19340721258
申请日期
1934.04.19
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
HARRISON LAURENCE S.
分类号
G04C13/04
主分类号
G04C13/04
代理机构
代理人
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地址
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