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Individual
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Individual
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Priority to ES8062ApriorityCriticalpatent/ES8062A1/es
Publication of ES8062A1publicationCriticalpatent/ES8062A1/es
ES8062A1888-03-221888-03-22Mejoras en los métodos de extracción del oro y de otros minerales preciosos de las piedras y minerales que lo contienen.
ExpiredES8062A1
(es)
Perfeccionamientos en los medios de efectuar la separación de las partículas de diferentes gravedades específicas, destinadas mas especialmente para la separación de oro y otros metales de minerales triturados o divididos.