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Publication of ES286903A1publicationCriticalpatent/ES286903A1/en
Improvements in the resin tubes with incorporated reinforcement, characterized in that their wall is made up of at least two layers of resin that enclose an essentially rigid reticular framework between them. (Machine-translation by Google Translate, not legally binding)
ES0286903A1963-03-201963-04-09Improvements in resin tubes with built-in armor (Machine-translation by Google Translate, not legally binding)
ExpiredES286903A1
(en)