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Individual
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Individual
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Priority to ES49314ApriorityCriticalpatent/ES49314A1/es
Publication of ES49314A1publicationCriticalpatent/ES49314A1/es
Un procedimiento para la imitación de géneros de piedras preciosas y de mayólica por medio de colocación de cristal detrás de las mismas con masas de colores plásticos.