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发明名称
Steuervorrichtung fuer die Feuerschutzklappe an Kinoapparaten
摘要
申请公布号
DE497179(C)
申请公布日期
1930.05.05
申请号
DENDATS082256D
申请日期
申请人
HERMANN SEUFERT
发明人
分类号
G03B21/18
主分类号
G03B21/18
代理机构
代理人
主权项
地址
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