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发明名称
Perfectionnements aux tubes à décharge
摘要
申请公布号
FR827107(A)
申请公布日期
1938.04.20
申请号
FRD827107
申请日期
1937.09.24
申请人
COMPAGNIE DES LAMPES
发明人
分类号
H01J61/52
主分类号
H01J61/52
代理机构
代理人
主权项
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