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发明名称
CATHODE ASSEMBLIES FOR ELECTRON TUBE DEVICES
摘要
申请公布号
GB1411079(A)
申请公布日期
1975.10.22
申请号
GB19710052607
申请日期
1971.11.12
申请人
EMI LTD
发明人
分类号
H01J29/04;(IPC1-7):H01J1/20
主分类号
H01J29/04
代理机构
代理人
主权项
地址
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