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经营范围
发明名称
Improvements in or relating to electron discharge circuit arrangements
摘要
申请公布号
GB524992(A)
申请公布日期
1940.08.20
申请号
GB19390001105
申请日期
1939.01.12
申请人
MARCONI'S WIRELESS TELEGRAPH COMPANY LIMITED;OSWOLD EDWARD KEALL
发明人
分类号
H03F1/36
主分类号
H03F1/36
代理机构
代理人
主权项
地址
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