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Priority to ES1979242022UpriorityCriticalpatent/ES242022Y/en
Publication of ES242022UpublicationCriticalpatent/ES242022U/en
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Publication of ES242022YpublicationCriticalpatent/ES242022Y/en
Improved mixed tubular link, essentially characterized in that it is constituted by a cylindrical element of variable diameter, endowed at one of its ends with an external thread and seats for sealing joints and at the opposite end of a smooth cylindrical outer surface. (Machine-translation by Google Translate, not legally binding)