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经营范围
发明名称
Dispositif d'éclairage à lentille condensatrice destiné à l'éclairage à grande distance ou à la projection d'images
摘要
申请公布号
FR822006(A)
申请公布日期
1937.12.18
申请号
FRD822006
申请日期
1937.05.19
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
G03B21/20
主分类号
G03B21/20
代理机构
代理人
主权项
地址
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