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Individual
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Individual
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Priority to ES20452ApriorityCriticalpatent/ES20452A3/es
Publication of ES20452A3publicationCriticalpatent/ES20452A3/es
Un procedimiento de difusión en vasos cerrados para fabricar extractos líquidos pastosos, sólidos o granulados, procedentes de toda clase de árboles y esencias vegetales que se destinarán al curtido de las pieles.