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发明名称
Automatic switching
摘要
申请公布号
US2736765(A)
申请公布日期
1956.02.28
申请号
US19530370344
申请日期
1953.07.27
申请人
RADIO CORPORATION OF AMERICA
发明人
LOHMAN ROBERT D.;HERZOG GERALD B.
分类号
H04N9/70
主分类号
H04N9/70
代理机构
代理人
主权项
地址
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