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经营范围
发明名称
électrode auxiliaire pour tubes à décharge électrique
摘要
申请公布号
FR764494(A)
申请公布日期
1934.05.22
申请号
FRD764494
申请日期
1933.02.09
申请人
SOCIETE INDEPENDANTE DE TELEGRAPHIE SANS FIL
发明人
分类号
H01J19/36
主分类号
H01J19/36
代理机构
代理人
主权项
地址
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