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Priority to ES1979240917UpriorityCriticalpatent/ES240917Y/es
Publication of ES240917UpublicationCriticalpatent/ES240917U/es
Application grantedgrantedCritical
Publication of ES240917YpublicationCriticalpatent/ES240917Y/es
ES1979240917U1979-01-231979-01-23Dispositivo obturador perfeccionado para el paso provisionalde liquidos por encima de una cierta presion.
ExpiredES240917Y
(es)