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ES84801A1923-03-201923-03-20Procedimiento químico para la extracción del estaño de cualquier producto natural o industrial que lo contenga.
ExpiredES84801A1
(es)
Un procedimiento perfeccionado para el tratamiento de cloruro de plomo o cloruro básico, para convertirle en otros compuestos y su aplicación al beneficiado de minerales de plomo y residuos del mismo metal.
Un procedimiento para el tratamiento de las sustancias coloides o isocoloides, naturales o industriales (artificiales), que contengan compuestos sin saturar.