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发明名称
Appareillage ciné-radio-phonographique pour des buts didactiques
摘要
申请公布号
FR789255(A)
申请公布日期
1935.10.25
申请号
FRD789255
申请日期
1935.04.25
申请人
ITALVOX
发明人
分类号
G03B31/00
主分类号
G03B31/00
代理机构
代理人
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