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Individual
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Individual
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Priority to ES3809ApriorityCriticalpatent/ES3809A1/es
Publication of ES3809A1publicationCriticalpatent/ES3809A1/es
ES3809A1883-12-131883-12-13Un procedimiento para poner en relieve por medio de moldeos sucesivos e impresión, las cartas geográficas y otras.
ExpiredES3809A1
(es)
Un procedimiento químico industrial, basado en la obtención de una película-típico-gelatinosa y su aplicación al grabado para la estampación fotolíptica.