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发明名称
Perfectionnements aux projecteurs
摘要
申请公布号
FR819107(A)
申请公布日期
1937.10.11
申请号
FRD819107
申请日期
1937.03.12
申请人
COMPAGNIE DES LAMPES
发明人
分类号
G03B21/20;H01K1/40;H01K3/26
主分类号
G03B21/20
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