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发明名称
Schaltvorrichtung fuer elektrische Lichtreklame
摘要
申请公布号
DE498934(C)
申请公布日期
1930.05.31
申请号
DE1929L075655D
申请日期
1929.07.10
申请人
JOHN ELMER LONG
发明人
分类号
G09G3/00
主分类号
G09G3/00
代理机构
代理人
主权项
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