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发明名称
Indirectly heated electron emitter for power tubes and the like
摘要
申请公布号
US2768321(A)
申请公布日期
1956.10.23
申请号
US19550505379
申请日期
1955.05.02
申请人
RADIO CORPORATION OF AMERICA
发明人
PETERSON FRED W.
分类号
H01J1/20
主分类号
H01J1/20
代理机构
代理人
主权项
地址
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