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发明名称
Improvements in or relating to electron discharge devices for use in television and like systems
摘要
申请公布号
GB516737(A)
申请公布日期
1940.01.10
申请号
GB19380019985
申请日期
1938.07.06
申请人
FERNSEH AKTIENGESELLSCHAFT
发明人
分类号
H01J31/30
主分类号
H01J31/30
代理机构
代理人
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