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发明名称
Keyboard perforator and counter
摘要
申请公布号
US2222631(A)
申请公布日期
1940.11.26
申请号
US19310582742
申请日期
1931.12.23
申请人
TELETYPESETTER CORPORATION
发明人
POTTS LOUIS M.
分类号
H04L17/08;H04L25/49
主分类号
H04L17/08
代理机构
代理人
主权项
地址
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