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ANCIENS LHUILLI Ets
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Publication of ES228019A1publicationCriticalpatent/ES228019A1/es
Perfeccionamientos introducidos en os métodos de escogido de las materias granulosas por medio de paredes giratorias provistas de alvéolos, caracterizados por la combinación del escogido por alvéolos con un efecto de clasificación de los granos por orden de densidades.
ES0228019A1955-06-301956-04-17Perfeccionamientos introducidos en los métodos de escogido de las materias granulosas
ExpiredES228019A1
(es)
Apparatus for introducing the filling material during the cutting shift simultaneously with carrying away the coal or other minerals which havebeen won