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经营范围
发明名称
Mechanical ciphering unit
摘要
申请公布号
US2504044(A)
申请公布日期
1950.04.11
申请号
US19460681444
申请日期
1946.07.05
申请人
MARTHA W. C. POTTS;TELETYPE CORPORATION
发明人
分类号
H04L9/22;H04L9/38;H04L17/00
主分类号
H04L9/22
代理机构
代理人
主权项
地址
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