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ES91460A1924-11-131924-11-13Un procedimiento para el tratamiento de los minerales "mispickels" con recuperación total de materias de constitución.
ExpiredES91460A1
(es)
Un procedimiento para el lavado de los carbones, minerales y otras materias análogas, con el aparato correspondiente, autoseparador de corriente de agua, para su realización.
Un procedimiento, para el lavado de los carbones, minerales y otras materias análogas, con el aparato correspondiente, autoseparador de corriente de agua, para su realización.