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经营范围
发明名称
Improvements in or relating to vapour cooling arrangements for electric discharge tubes
摘要
申请公布号
GB766618(A)
申请公布日期
1957.01.23
申请号
GB19550004593
申请日期
1955.02.16
申请人
TELEFUNKEN G.M.B.H.
发明人
分类号
H01J19/36
主分类号
H01J19/36
代理机构
代理人
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