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经营范围
发明名称
Matériel de projection, plus spécialement pour l'enseignement
摘要
申请公布号
FR1066480(A)
申请公布日期
1954.06.08
申请号
FRD1066480
申请日期
1952.11.12
申请人
发明人
CHARLOT LUCIEN-GEORGES
分类号
G03B21/06;G03B21/58
主分类号
G03B21/06
代理机构
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