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发明名称
Dispositifs à décharge électronique
摘要
申请公布号
FR834004(A)
申请公布日期
1938.11.09
申请号
FRD834004
申请日期
1938.02.18
申请人
LE MATERIEL TELEPHONIQUE
发明人
分类号
A01G9/10;H01J21/06;H01J21/20;H03B9/01;H03F1/16
主分类号
A01G9/10
代理机构
代理人
主权项
地址
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