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经营范围
发明名称
Perfectionnements aux systèmes d'entraînement des films
摘要
申请公布号
FR39591(E)
申请公布日期
1931.11.30
申请号
FRD39591
申请日期
1930.11.18
申请人
COMPAGNIE FRANCAISE POUR L'EXPLOITATION DES PROCEDES THOMSON-HOUSTON
发明人
分类号
G03B31/02
主分类号
G03B31/02
代理机构
代理人
主权项
地址
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