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发明名称
Disposition pour la transformation de variations de l'intensité lumineuse en variations d'états de service électriques
摘要
申请公布号
FR42274(E)
申请公布日期
1933.06.21
申请号
FRD42274
申请日期
1931.02.25
申请人
发明人
GRUETZMACHER MARTIN
分类号
H01J40/06
主分类号
H01J40/06
代理机构
代理人
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