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Individual
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Individual
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Priority to ES70656ApriorityCriticalpatent/ES70656A1/es
Publication of ES70656A1publicationCriticalpatent/ES70656A1/es
ES70656A1919-08-131919-08-13Un sistema de horno rotatorio para la fabricación directa del hierro o del acero, o para fabricar fundición.
ExpiredES70656A1
(es)
Un procedimiento para la fabricación de herramientas de aceros rápidos o especiales, por aprovechamiento de la colada directa de los desechos de dichos aceros.