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经营范围
发明名称
Method and apparatus for picture transmission by wire or radio
摘要
申请公布号
US1787851(A)
申请公布日期
1931.01.06
申请号
US19230669688
申请日期
1923.10.20
申请人
RADIO CORPORATION OF AMERICA
发明人
ALEXANDERSON ERNST F. W.;RANGER RICHARD HOWLAND
分类号
H04N7/24
主分类号
H04N7/24
代理机构
代理人
主权项
地址
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