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发明名称
Improvements relating to cathode heaters
摘要
申请公布号
GB848589(A)
申请公布日期
1960.09.21
申请号
GB19580018535
申请日期
1958.06.10
申请人
SIEMENS EDISON SWAN LIMITED
发明人
FARROW FREDERIC WILLIAM RODBARD
分类号
H01J1/22
主分类号
H01J1/22
代理机构
代理人
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