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Individual
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Individual
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Priority to ES541244ApriorityCriticalpatent/ES541244A0/es
Publication of ES8605312A2publicationCriticalpatent/ES8605312A2/es
Publication of ES541244A0publicationCriticalpatent/ES541244A0/es
ES541244A1985-03-141985-03-14Mejoras en la patente principal n.489.281 por: sistema para el soporte de encofrados para superficies horizontales.
GrantedES541244A0
(es)
Mejoras introducidas en el objeto de la patente principal n.495.932 por:un procedimiento para la preparacion de deriva- dos de piridina o de pirimidina.