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经营范围
发明名称
Perfectionnements aux amplificateurs de courants photoélectriques
摘要
申请公布号
FR779340(A)
申请公布日期
1935.04.02
申请号
FRD779340
申请日期
1933.12.23
申请人
COMPAGNIE POUR LA FABRICATION DES COMPTEURS ET MATERIEL D'USINES A GAZ
发明人
分类号
H01J40/00
主分类号
H01J40/00
代理机构
代理人
主权项
地址
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