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发明名称
Teletypewriter
摘要
申请公布号
US2250857(A)
申请公布日期
1941.07.29
申请号
US19390303526
申请日期
1939.11.09
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
DOTY CHARLES R.
分类号
H04L17/22
主分类号
H04L17/22
代理机构
代理人
主权项
地址
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