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发明名称
PROJECTION SCREENS
摘要
申请公布号
IE21696(L)
申请公布日期
1955.12.28
申请号
IE19550000394
申请日期
1955.06.27
申请人
JOHAN SAM JACOBSON;N.V. EXPLOITATIE MAATSCHAPPIJ 'HET HOF VAN HOLLAND'
发明人
分类号
(IPC1-7):G09F/00
主分类号
(IPC1-7):G09F/00
代理机构
代理人
主权项
地址
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