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发明名称
UN PROCEDIMIENTO DE FOTOGRABADO POR MEDIO DE PLACAS METáLICAS.
摘要
申请公布号
ES116145(A1)
申请公布日期
1930.01.16
申请号
ES19450001161
申请日期
1929.12.19
申请人
LUDVIGSEN, NIELS
发明人
分类号
(IPC1-7):B41
主分类号
(IPC1-7):B41
代理机构
代理人
主权项
地址
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