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发明名称
Dispositif pour rassembler une collection de diapositifs et permettre leur observation par transparence
摘要
申请公布号
FR1072838(A)
申请公布日期
1954.09.16
申请号
FRD1072838
申请日期
1953.03.10
申请人
发明人
DEWEVER RAYMOND
分类号
G02B27/02
主分类号
G02B27/02
代理机构
代理人
主权项
地址
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