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发明名称
Procédé de production d'héliographies et dispositif pour la mise en ceuvre de ce procédé
摘要
申请公布号
FR789904(A)
申请公布日期
1935.11.08
申请号
FRD789904
申请日期
1935.05.10
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
G03B27/16
主分类号
G03B27/16
代理机构
代理人
主权项
地址
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