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经营范围
发明名称
Elektrische Entladungsröhre.
摘要
申请公布号
CH179577(A)
申请公布日期
1935.09.15
申请号
CHD179577
申请日期
1934.11.06
申请人
RADIO CORPORATION OF AMERICA
发明人
AMERICA RADIO CORPORATION OF
分类号
H01J19/52
主分类号
H01J19/52
代理机构
代理人
主权项
地址
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