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发明名称
Perfectionnements aux dispositifs à décharge électronique
摘要
申请公布号
FR827731(A)
申请公布日期
1938.05.03
申请号
FRD827731
申请日期
1937.10.11
申请人
MARCONI'S WIRELESS TELEGRAPH COMPANY LIMITED
发明人
分类号
H01J43/22
主分类号
H01J43/22
代理机构
代理人
主权项
地址
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