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发明名称
Dispositivo electrográfico luminoso, alimentado por pila seca o corriente de la luz, funcionando sin hilos conductores en los punteros.
摘要
申请公布号
ES7505(U)
申请公布日期
1942.12.16
申请号
ES19050000075U
申请日期
1942.05.27
申请人
CARPIO COCA, TOMÁS
发明人
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主分类号
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