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经营范围
发明名称
Cathode structure
摘要
申请公布号
GB1039780(A)
申请公布日期
1966.08.24
申请号
GB19640052439
申请日期
1964.12.24
申请人
RAYTHEON COMPANY
发明人
分类号
H01J1/20;H01J3/02
主分类号
H01J1/20
代理机构
代理人
主权项
地址
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