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发明名称
DISPOSITIF INDICATEUR A DIODES EMETTANT DE LA LUMIERE POUR CLAVIER DE BOUTONS-POUSSOIRS,
摘要
申请公布号
BE847950(A1)
申请公布日期
1977.03.01
申请号
BE19760172054
申请日期
1976.11.03
申请人
发明人
分类号
G06F3/02;H01H13/02;H03J5/08;H04M1/23;(IPC1-7):G12B/
主分类号
G06F3/02
代理机构
代理人
主权项
地址
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