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发明名称
Perfectionnements apportés aux écrans de projection, notamment pour le cinéma.
摘要
申请公布号
OA170(A)
申请公布日期
1966.03.15
申请号
OA19640050204
申请日期
1964.07.16
申请人
JULES HOURDIAUX
发明人
分类号
G03B21/56;G03B21/60;(IPC1-7):G03B21/60
主分类号
G03B21/56
代理机构
代理人
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