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发明名称
Relay type selecting circuit arrangement
摘要
申请公布号
US2628277(A)
申请公布日期
1953.02.10
申请号
US19490134193
申请日期
1949.12.21
申请人
RADIO CORPORATION OF AMERICA
发明人
SPENCER JAMES ALBERT
分类号
H04L17/16
主分类号
H04L17/16
代理机构
代理人
主权项
地址
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