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发明名称
Electron discharge tube apparatus
摘要
申请公布号
US2803770(A)
申请公布日期
1957.08.20
申请号
US19510246005
申请日期
1951.09.11
申请人
FERNSEH G. M. B. H.
发明人
HARKENSEE GEORG
分类号
H01J29/66;H01J31/32
主分类号
H01J29/66
代理机构
代理人
主权项
地址
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