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发明名称
Vorrichtung zum Projizieren von Lichtbildzeichen, insbesondere an Wolkenwaenden
摘要
申请公布号
DE555478(C)
申请公布日期
1933.02.02
申请号
DED555478D
申请日期
1930.10.12
申请人
ALFRED COLBERG
发明人
分类号
G09F19/18
主分类号
G09F19/18
代理机构
代理人
主权项
地址
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