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Publication of GB870242ApublicationCriticalpatent/GB870242A/en
Jonction de l'arbre et du moyeu d'un entraînement de machine pour transmission de moments de rotation, en particulier pour des sens de rotation changeant périodiquement
Appareil pour l'étude de la motricité, c'est-à-dire la vitesse et l'exactitude, de l'écriture chez un individu en vue de l'éducation tactile de celui-ci