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Individual
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Individual
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Priority to ES0057704UpriorityCriticalpatent/ES57704Y/es
Publication of ES57704UpublicationCriticalpatent/ES57704U/es
Application grantedgrantedCritical
Publication of ES57704YpublicationCriticalpatent/ES57704Y/es
Válvula de desagüe de cierre hermético con retentor de residuos, caracterizado por que el tapón de abertura y cierre lleva en su cuerpo practicadas unas concavidades semi-esféricas que constituyen ventosas de cierre.
ES0057704U1956-12-151956-12-15Válvula de desagüe de cierre hermético con retentor de residuos
ExpiredES57704Y
(es)