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发明名称
Dispositif faisant apparaître des chiffres, lettres ou inscriptions
摘要
申请公布号
FR759849(A)
申请公布日期
1934.02.10
申请号
FRD759849
申请日期
1933.08.23
申请人
发明人
LOCUSSOL HENRI
分类号
G09D3/06
主分类号
G09D3/06
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代理人
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