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发明名称
Improvements in or relating to electric discharge tubes
摘要
申请公布号
GB325885(A)
申请公布日期
1930.03.03
申请号
GB19280035585
申请日期
1928.12.03
申请人
THE GENERAL ELECTRIC COMPANY LIMITED;NORMAN ROBERT CAMPBELL
发明人
分类号
H01J19/44
主分类号
H01J19/44
代理机构
代理人
主权项
地址
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