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发明名称
Dispositif à rayonnement phosphorescent ou à éclairage électrique pour indiquer les sièges vides dans les salles de représentations cinematographiques, théâtrales et autres
摘要
申请公布号
FR983461(A)
申请公布日期
1951.06.25
申请号
FRD983461
申请日期
1946.10.18
申请人
发明人
CARBONE SALVATORE
分类号
F21V9/16
主分类号
F21V9/16
代理机构
代理人
主权项
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