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发明名称
Moyens de commande de décharge d'électrons et dispositions y relatives
摘要
申请公布号
FR861404(A)
申请公布日期
1941.02.08
申请号
FRD861404
申请日期
1939.07.29
申请人
LE MATERIEL TELEPHONIQUE
发明人
分类号
H01J25/12
主分类号
H01J25/12
代理机构
代理人
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地址
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