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发明名称
Recording device
摘要
申请公布号
US1979208(A)
申请公布日期
1934.10.30
申请号
US19300456745
申请日期
1930.05.28
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
FRIDEN CARL M. F.
分类号
G07C1/06
主分类号
G07C1/06
代理机构
代理人
主权项
地址
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