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经营范围
发明名称
Improvements in or relating to connecting devices comprising electron tubes
摘要
申请公布号
GB742852(A)
申请公布日期
1956.01.04
申请号
GB19500015396
申请日期
1950.06.20
申请人
TELEFONAKTIEBOLAGET L M ERICSSON
发明人
分类号
H01J21/18;H01J31/06
主分类号
H01J21/18
代理机构
代理人
主权项
地址
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