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Individual
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Individual
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Priority to ES0052923UpriorityCriticalpatent/ES52923Y/es
Publication of ES52923UpublicationCriticalpatent/ES52923U/es
Application grantedgrantedCritical
Publication of ES52923YpublicationCriticalpatent/ES52923Y/es
Juego instructivo perfeccionado, que se caracteriza por estar constituido por un libro una de cuyas tapas tiene practicada una caja o alojamiento circular con una pequeña muesca o escotadura en su perímetro, caracterizándose además por que la tapa opuesta aloja un imán permanente cubierto por una placa de superficie lisa.