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发明名称
ELECTRONDISCHARGE TUBES
摘要
申请公布号
GB1360745(A)
申请公布日期
1974.07.24
申请号
GB19720050036
申请日期
1972.10.31
申请人
SIEMENS AG
发明人
分类号
H01J19/38;H01J1/46;H01J21/06;H01J21/18;H01J23/06;(IPC1-7):H01J21/14
主分类号
H01J19/38
代理机构
代理人
主权项
地址
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