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发明名称
Tableau indicateur lumineux pour plans, cartes géographiques ou diagrammes
摘要
申请公布号
FR1025795(A)
申请公布日期
1953.04.20
申请号
FRD1025795
申请日期
1950.10.10
申请人
发明人
DAVIS BERTRAM;SILVERSTONE ERIC LEOPOLD
分类号
G09B29/10
主分类号
G09B29/10
代理机构
代理人
主权项
地址
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