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经营范围
发明名称
Fremgangsmåde til regulering af gradationen af en fotografisk kontrast.
摘要
申请公布号
DK76311(C)
申请公布日期
1953.08.31
申请号
DK19470000228
申请日期
1947.01.18
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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