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经营范围
发明名称
Improvements in or relating to travelling wave tubes
摘要
申请公布号
GB796460(A)
申请公布日期
1958.06.11
申请号
GB19560020456
申请日期
1956.07.02
申请人
COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL
发明人
分类号
H01J23/083;H01J23/28
主分类号
H01J23/083
代理机构
代理人
主权项
地址
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