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ES108280A1928-06-261928-06-26Un procedimiento para extraer el aceite de los frutos y semillas oleaginosos, por medio del dispositivo que se describe.
ExpiredES108280A1
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Perfeccionamientos en los aparatos o instalaciones para la extracción de materia grasas mediante disolventes incombustibles, y en particular el tricloretileno, por medio del procedimiento que se describe.
Un aparato para evitar el acceso de insectos de toda clase a los árboles, especialmente frutales mediante el aislamiento por medio de líquido adecuado.