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经营范围
发明名称
Dispositifs à décharge électronique
摘要
申请公布号
FR872792(A)
申请公布日期
1942.06.18
申请号
FRD872792
申请日期
1941.05.30
申请人
LE MATERIEL TELEPHONIQUE
发明人
分类号
H01J5/24;H01J19/28;H01J19/38;H01J21/02;H01J21/06;H01J21/20
主分类号
H01J5/24
代理机构
代理人
主权项
地址
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