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经营范围
发明名称
Perfectionnements aux projecteurs
摘要
申请公布号
FR674271(A)
申请公布日期
1930.01.27
申请号
FRD674271
申请日期
1929.04.30
申请人
发明人
ABGRALL PIERRE
分类号
G03B21/16
主分类号
G03B21/16
代理机构
代理人
主权项
地址
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