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发明名称
Photoradioscope
摘要
申请公布号
US1819197(A)
申请公布日期
1931.08.18
申请号
US19280245349
申请日期
1928.01.09
申请人
RADIO CORPORATION OF AMERICA
发明人
RANGER RICHARD HOWLAND
分类号
H04N1/06;H04N1/12
主分类号
H04N1/06
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代理人
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