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经营范围
发明名称
Perfectionnements apportés aux films
摘要
申请公布号
FR40099(E)
申请公布日期
1932.04.20
申请号
FRD40099
申请日期
1931.04.10
申请人
COMPAGNIE FRANCAISE POUR L'EXPLOITATION DES PROCEDES THOMSON-HOUSTON
发明人
分类号
G11B7/28
主分类号
G11B7/28
代理机构
代理人
主权项
地址
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