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发明名称
Projecteur pour diapositives à double optique
摘要
申请公布号
FR92172(E)
申请公布日期
1968.10.04
申请号
FR19670103478
申请日期
1967.04.20
申请人
发明人
GRENIER GEORGES
分类号
G03B23/18;G03B35/20
主分类号
G03B23/18
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