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经营范围
发明名称
Improvements in or relating to electron guns for producing electron beams
摘要
申请公布号
GB754849(A)
申请公布日期
1956.08.15
申请号
GB19540004260
申请日期
1954.02.12
申请人
GESELLSCHAFT ZUR FORDERUNG DER FORSCHUNG AN DER EIDG. TECHN. HOCHSCHULE
发明人
分类号
H01J29/48;H01J29/84
主分类号
H01J29/48
代理机构
代理人
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地址
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