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发明名称
Improvements in or relating to electric discharge devices
摘要
申请公布号
GB505951(A)
申请公布日期
1939.05.19
申请号
GB19380025012
申请日期
1938.08.25
申请人
WESTINGHOUSE ELECTRIC & MANUFACTURING CO.
发明人
分类号
H01J17/06
主分类号
H01J17/06
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代理人
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