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经营范围
发明名称
Perfectionnements aux systèmes de télévision
摘要
申请公布号
FR769172(A)
申请公布日期
1934.08.21
申请号
FRD769172
申请日期
1934.02.24
申请人
RADIO CORPORATION OF AMERICA
发明人
分类号
H04N5/16
主分类号
H04N5/16
代理机构
代理人
主权项
地址
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