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发明名称
Improvements in or relating to Dispenser Cathodes
摘要
申请公布号
GB1175486(A)
申请公布日期
1969.12.23
申请号
GB19680008338
申请日期
1968.02.21
申请人
SIEMENS AKTIENGESELLSCHAFT
发明人
分类号
H01J1/26;H01J1/28
主分类号
H01J1/26
代理机构
代理人
主权项
地址
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