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发明名称
Communication system
摘要
申请公布号
US2304769(A)
申请公布日期
1942.12.08
申请号
US19400353113
申请日期
1940.08.17
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
NICHOLS HARRY J.;THOLSTRUP HENRY L.
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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