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发明名称
PERFECTIONNEMENTS AUX PROJECTEURS DE DIAPOSITIVES
摘要
申请公布号
BE758157(A1)
申请公布日期
1971.04.28
申请号
BED758157
申请日期
申请人
GAF CORP., 140 WEST 51 ST STREET, NEW YORK, N.Y. (E.U.A.),
发明人
E. DENIS;L. DE BONDT
分类号
G03B23/04;(IPC1-7):G03B/
主分类号
G03B23/04
代理机构
代理人
主权项
地址
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