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发明名称
Improvements in and relating to electric discharge devices
摘要
申请公布号
GB311294(A)
申请公布日期
1930.08.08
申请号
GB19290014412
申请日期
1929.05.08
申请人
HANS JOACHIM SPANNER;ULRICH WOLFGANG DOERING
发明人
分类号
H01J61/067
主分类号
H01J61/067
代理机构
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