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Priority to ES1971168846UpriorityCriticalpatent/ES168846Y/en
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Publication of ES168846YpublicationCriticalpatent/ES168846Y/en
Improved tubular conduction, characterized essentially by the fact that it consists of a tube of plastic material whose wall has longitudinally reinforcing solid zones and hollow zones, distributed to conduct elements coaxially and which isolate the axial passage with respect to the external environment. (Machine-translation by Google Translate, not legally binding)