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发明名称
Improvements in or relating to electron discharge device for microwaves
摘要
申请公布号
GB740358(A)
申请公布日期
1955.11.09
申请号
GB19520012140
申请日期
1952.05.13
申请人
TELEFONAKTIEBOLAGET L M ERICSSON
发明人
SVENSSON REGNAR HOLMFRID
分类号
H01J25/24
主分类号
H01J25/24
代理机构
代理人
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