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发明名称
Geraet zur wahlweisen Sichtbarmachung verschiedener Flaechendarstellungen
摘要
申请公布号
DE669463(C)
申请公布日期
1938.12.28
申请号
DE1937S125645D
申请日期
1937.01.08
申请人
PETER SECKLMANN
发明人
SECKLMANN PETER
分类号
G09F11/02
主分类号
G09F11/02
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代理人
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