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发明名称
écran lumineux à miroirs triples
摘要
申请公布号
FR871875(A)
申请公布日期
1942.05.20
申请号
FRD871875
申请日期
1941.05.03
申请人
SOCIETE ULLMANN & POCHMANN
发明人
分类号
G03B21/60
主分类号
G03B21/60
代理机构
代理人
主权项
地址
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