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发明名称
Thermionic valve circuits
摘要
申请公布号
US1943459(A)
申请公布日期
1934.01.16
申请号
US19240690220
申请日期
1924.02.02
申请人
RADIO CORPORATION OF AMERICA
发明人
ROUND HENRY JOSEPH;WILLANS PETER WILLIAM
分类号
H03F1/16
主分类号
H03F1/16
代理机构
代理人
主权项
地址
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