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Individual
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Individual
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Priority to ES450908ApriorityCriticalpatent/ES450908A1/es
Publication of ES450908A1publicationCriticalpatent/ES450908A1/es
Mejoras introducidas en el objeto de la patente principal n 450.908, concedida el 25 de mayo de 1977 por: perfeccionamientos en equipos filtrantes para piscinas