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发明名称
Elektrische Entladungsröhre.
摘要
申请公布号
CH194024(A)
申请公布日期
1937.11.15
申请号
CHD194024
申请日期
1936.11.17
申请人
RADIO CORPORATION OF AMERICA
发明人
AMERICA RADIO CORPORATION OF
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主分类号
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