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经营范围
发明名称
Feuerschutzklappe an Kinowiedergabemaschinen
摘要
申请公布号
DE524679(C)
申请公布日期
1931.05.11
申请号
DENDATZ018608D
申请日期
申请人
ZEISS IKON A.G.
发明人
分类号
G03B21/18
主分类号
G03B21/18
代理机构
代理人
主权项
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