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经营范围
发明名称
A cathode ray tube circuit
摘要
申请公布号
GB665872(A)
申请公布日期
1952.01.30
申请号
GB19490010929
申请日期
1949.04.25
申请人
RADIO CORPORATION OF AMERICA
发明人
分类号
H04N5/57
主分类号
H04N5/57
代理机构
代理人
主权项
地址
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