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ES65107A1917-07-281917-07-28Procedimiento perfeccionado para enriquecer minerales por medio de la flotación, mediante el aparato que se describe.
ExpiredES65107A1
(es)
Un aparato para la desinfección de los cereales por medio del gas cianhídrico adaptable a los graneros americanos Martin o sus similares, que se denominará "Remim".