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发明名称
Apparatus for producing heaters for plural purpose vacuum tubes
摘要
申请公布号
US3151637(A)
申请公布日期
1964.10.06
申请号
US19600059005
申请日期
1960.09.28
申请人
RADIO CORPORATION OF AMERICA
发明人
LEVINE HARVEY
分类号
H01J9/10;H01J19/00
主分类号
H01J9/10
代理机构
代理人
主权项
地址
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