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发明名称
Vorrichtung zur Vorfuehrung beweglicher Reklamebilder, insbesondere unter Ausnutzung des Gegenwindes bei Fahrzeugen
摘要
申请公布号
DE520339(C)
申请公布日期
1931.03.10
申请号
DED520339D
申请日期
申请人
ERNST ARNOLDT
发明人
分类号
G09F7/22
主分类号
G09F7/22
代理机构
代理人
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