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Individual
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Individual
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Priority to ES6436ApriorityCriticalpatent/ES6436A1/es
Publication of ES6436A1publicationCriticalpatent/ES6436A1/es
Mejoras en el procedimiento para cubrir planchas de metal con estaño plomo y otros metales y aleaciones de los mismos utilizando fundentes especiales para la preparación de dichas planchas.
Perfeccionamientos introducidos en el procedimiento para tratar minerales y materias que contienen azufre, con el objeto de la extracción de metales y otros constituyentes.