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经营范围
发明名称
Rectifying tube
摘要
申请公布号
US1780504(A)
申请公布日期
1930.11.04
申请号
US19270209788
申请日期
1927.08.01
申请人
RISLER CORPORATION OF AMERICA
发明人
RISLER JACQUES
分类号
H01J17/26
主分类号
H01J17/26
代理机构
代理人
主权项
地址
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