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经营范围
发明名称
Electron tube
摘要
申请公布号
GB1044170(A)
申请公布日期
1966.09.28
申请号
GB19630050775
申请日期
1963.12.23
申请人
VARIAN ASSOCIATION
发明人
分类号
H01J19/34;H01J19/40;H01J19/42;H01J19/78;H01J21/06
主分类号
H01J19/34
代理机构
代理人
主权项
地址
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