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Priority to ES1974204211UpriorityCriticalpatent/ES204211Y/en
Publication of ES204211UpublicationCriticalpatent/ES204211U/en
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Publication of ES204211YpublicationCriticalpatent/ES204211Y/en
Improved overpressure, characterized by a cylindrical body of elongated shape provided in its part. Top of a lid with a series of small through holes that do not allow the passage of the ball that is inside for closing. (Machine-translation by Google Translate, not legally binding)