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经营范围
发明名称
Improvements in or relating to electron discharge tubes
摘要
申请公布号
GB850814(A)
申请公布日期
1960.10.05
申请号
GB19570027367
申请日期
1957.08.30
申请人
TELEFUNKEN G.M.B.H.
发明人
分类号
H01J1/14
主分类号
H01J1/14
代理机构
代理人
主权项
地址
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