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发明名称
Vacuum tube system
摘要
申请公布号
US1935156(A)
申请公布日期
1933.11.14
申请号
US19280303480
申请日期
1928.09.01
申请人
RADIO CORPORATION OF AMERICA
发明人
LAFFERTY CHARLES L.
分类号
H04B1/16
主分类号
H04B1/16
代理机构
代理人
主权项
地址
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