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ES40434A1907-03-261907-03-26Un procedimiento para cargar los hornos eléctricos destinados a fabricar carburo por medio de la cal y del carbón.
ExpiredES40434A3
(es)
Un procedimiento perfeccionado para la elaboración de briquetas de mineral de hierro y otros minerales, del polvo de los fluses de altos hornos y de materias similares.
Un procedimiento para la fabricación de briquetas fundibles del polvo de los gases de altos hornos, del polvo de mineral o de minerales de grano menudo.