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发明名称
Cipher eliminating mechanism
摘要
申请公布号
US1951592(A)
申请公布日期
1934.03.20
申请号
US19310533057
申请日期
1931.04.27
申请人
PORTABLE ADDING MACHINE COMPANY
发明人
BARRETT GLENN J.
分类号
G06C25/00
主分类号
G06C25/00
代理机构
代理人
主权项
地址
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