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Priority to ES0257808ApriorityCriticalpatent/ES257808A2/es
Publication of ES257808A2publicationCriticalpatent/ES257808A2/es
Mejoras introducidas en el objeto de la Patente Principal número 249440 por sistema de válvula de seguridad contra escapes de gas, consistentes en la adición de una válvula de retención en serie con la cámara inferior al émbolo.
ES0257808A1960-05-031960-05-03Sistema de valvula de seguridad contra escapes de gas
ExpiredES257808A2
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