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发明名称
Electron discharge device circuit arrangement
摘要
申请公布号
US1877129(A)
申请公布日期
1932.09.13
申请号
US19310554345
申请日期
1931.07.31
申请人
JOHN OLSON;WIRED RADIO, INC.
发明人
分类号
H04B15/00
主分类号
H04B15/00
代理机构
代理人
主权项
地址
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