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发明名称
Potential supply system for thermionic tubes
摘要
申请公布号
US1988209(A)
申请公布日期
1935.01.15
申请号
US19280265533
申请日期
1928.03.29
申请人
JAMES MILLEN
发明人
MILLEN JAMES
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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