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发明名称
Improvements relating to thermionic modulating systems
摘要
申请公布号
GB371511(A)
申请公布日期
1932.04.28
申请号
GB19310004308
申请日期
1931.02.11
申请人
KOLSTER RADIO CORPORATION
发明人
分类号
H03C1/20
主分类号
H03C1/20
代理机构
代理人
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