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发明名称
Dispositif à décharge électronique utilisant des émissions secondaires multiples successives
摘要
申请公布号
FR848286(A)
申请公布日期
1939.10.26
申请号
FRD848286
申请日期
1938.06.29
申请人
LE MATERIEL TELEPHONIQUE
发明人
分类号
H01J43/18
主分类号
H01J43/18
代理机构
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